RHSA-2026:89757

Vulnerability from csaf_redhat - Published: 2026-10-26 04:16 - Updated: 2026-10-31 06:20
Summary
Red Hat Security Advisory: firefox security, bug fix, and enhancement update
Severity
Important
Notes
Topic: An update for firefox is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fix(es): * libexpat: denial of service via crafted XML input (CVE-2026-45186) * firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704) * firefox: Use-after-free in the XML component (CVE-2026-109718) * firefox: Information disclosure in the PDF Viewer component (CVE-2026-109742) * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715) * firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740) * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706) * firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713) * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109724) * firefox: Sandbox escape due to uninitialized memory in the DOM: Web Serial component (CVE-2026-109745) * firefox: Mitigation bypass in the File Handling component (CVE-2026-109782) * firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component (CVE-2026-109709) * firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component (CVE-2026-109705) * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-109738) * firefox: Sandbox escape due to race condition in the Networking component (CVE-2026-109757) * firefox: Use-after-free in the Storage: Bucket File System component (CVE-2026-109741) * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729) * firefox: Other issue in the DOM: File component (CVE-2026-109744) * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716) * firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719) * firefox: Incorrect boundary conditions in the Layout component (CVE-2026-109753) * firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723) * firefox: Privilege escalation in the DOM: Navigation component (CVE-2026-109756) * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109733) * firefox: Mitigation bypass in the File Handling component (CVE-2026-109763) * firefox: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-109708) * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717) * firefox: Use-after-free in the DOM: Workers component (CVE-2026-109752) * firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707) * firefox: Mitigation bypass in the Networking: HTTP component (CVE-2026-109760) * firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720) * firefox: Use-after-free in the SVG component (CVE-2026-109726) * firefox: Integer overflow in the Graphics component (CVE-2026-109730) * firefox: Use-after-free in the Audio/Video component (CVE-2026-109727) * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109737) * firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732) * firefox: Site isolation issue in the Networking component (CVE-2026-109759) * firefox: Incorrect boundary conditions in the SVG component (CVE-2026-109762) * firefox: Incorrect boundary conditions in the DOM: Editor component (CVE-2026-109754) * firefox: Information disclosure in the Networking component (CVE-2026-109751) * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109725) * firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712) * firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711) * firefox: Frame poisoning in the Layout component (CVE-2026-109736) * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722) * firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728) * firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721) * firefox: Privilege escalation in the Panning and Zooming component (CVE-2026-109743) Bug Fix(es) and Enhancement(s): * Firefox ESR 153 rebase [rhel-9.8.z] (JIRA:RHEL-175155) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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CVE-2026-45186

A flaw was found in libexpat. When processing a specially crafted XML input containing a specific pattern of attributes, the parsing time increases quadratically due to checks for attribute name collisions. This consumes excessive CPU resources and eventually results in a denial of service.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-407 - Inefficient Algorithmic Complexity
Affected products
Product Identifier Version Remediation
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.s390x —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.src —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.s390x —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.s390x —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.s390x —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-109704

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the Application Update component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-266 - Incorrect Privilege Assignment
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109705

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109706

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Storage: IndexedDB component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109707

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to use-after-free in the Networking component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109708

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to incorrect boundary conditions in the Networking component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-653 - Improper Isolation or Compartmentalization
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109709

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure, privilege escalation in the Security: Process Sandboxing component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-653 - Improper Isolation or Compartmentalization
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109711

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Graphics: Canvas2D component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109712

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to uninitialized memory in the Graphics component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-908 - Use of Uninitialized Resource
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109713

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Crash Reporting component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109715

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the JavaScript Engine component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109716

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the JavaScript Engine component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109717

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Bindings (WebIDL) component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109718

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the XML component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109719

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Race condition, use-after-free in the Graphics: CanvasWebGL component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109720

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: JIT miscompilation in the JavaScript: WebAssembly component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109721

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the JavaScript Engine: JIT component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109722

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: JIT miscompilation in the JavaScript Engine: JIT component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109723

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Integer overflow in the Layout: Text and Fonts component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-190 - Integer Overflow or Wraparound
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109724

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109725

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109726

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the SVG component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109727

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Audio/Video component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109728

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Animation component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109729

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the JavaScript Engine: JIT component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109730

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Integer overflow in the Graphics component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-190 - Integer Overflow or Wraparound
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109732

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Streams component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109733

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: JIT miscompilation in the JavaScript Engine: JIT component

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109736

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Frame poisoning in the Layout component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109737

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Mitigation bypass in the Enterprise Policies component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109738

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Audio/Video: Playback component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109740

A flaw was found in Firefox. Incorrect boundary condition handling in the Win32 widget component allows an attacker to escape the browser's restricted sandbox environment. An attacker who has compromised a sandboxed content process could exploit this vulnerability to achieve privilege escalation and execute arbitrary code on the underlying operating system.

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-653 - Improper Isolation or Compartmentalization
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Important
CVE-2026-109741

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Storage: Bucket File System component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109742

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure in the PDF Viewer component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-201 - Insertion of Sensitive Information Into Sent Data
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109743

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the Panning and Zooming component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-266 - Incorrect Privilege Assignment
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109744

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Other issue in the DOM: File component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-552 - Files or Directories Accessible to External Parties
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109745

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to uninitialized memory in the DOM: Web Serial component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-908 - Use of Uninitialized Resource
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109751

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure in the Networking component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-201 - Insertion of Sensitive Information Into Sent Data
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109752

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Workers component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109753

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Layout component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-193 - Off-by-one Error
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109754

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the DOM: Editor component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-193 - Off-by-one Error
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109756

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the DOM: Navigation component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-266 - Incorrect Privilege Assignment
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109757

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to race condition in the Networking component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-368 - Context Switching Race Condition
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109759

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Site isolation issue in the Networking component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-653 - Improper Isolation or Compartmentalization
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109760

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Mitigation bypass in the Networking: HTTP component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-358 - Improperly Implemented Security Check for Standard
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109762

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the SVG component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-787 - Out-of-bounds Write
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109763

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Mitigation bypass in the File Handling component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-641 - Improper Restriction of Names for Files and Other Resources
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
CVE-2026-109782

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Mitigation bypass in the File Handling component

6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-356 - Product UI does not Warn User of Unsafe Actions
Affected products
Fixed 17 products, the same list as for CVE-2026-45186
Threats
Impact Moderate
References
URL Category
https://access.redhat.com/errata/RHSA-2026:89757 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=2468575 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550397 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550400 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550401 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550403 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550404 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550405 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550406 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550408 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550410 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550411 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550412 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550413 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550417 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550418 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550419 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550420 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550421 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550422 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550424 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550425 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550426 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550428 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550429 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550431 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550432 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550433 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550434 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550438 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550440 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550442 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550446 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550450 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550451 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550452 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550455 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550458 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550461 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550464 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550465 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550467 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550468 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550469 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550470 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550471 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550474 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550478 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550480 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-45186 self
https://bugzilla.redhat.com/show_bug.cgi?id=2468575 external
https://www.cve.org/CVERecord?id=CVE-2026-45186 external
https://nvd.nist.gov/vuln/detail/CVE-2026-45186 external
https://github.com/libexpat/libexpat/pull/1216 external
https://access.redhat.com/security/cve/CVE-2026-109704 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550397 external
https://www.cve.org/CVERecord?id=CVE-2026-109704 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109704 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109705 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550413 external
https://www.cve.org/CVERecord?id=CVE-2026-109705 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109705 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109706 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550405 external
https://www.cve.org/CVERecord?id=CVE-2026-109706 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109706 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109707 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550438 external
https://www.cve.org/CVERecord?id=CVE-2026-109707 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109707 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109708 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550432 external
https://www.cve.org/CVERecord?id=CVE-2026-109708 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109708 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109709 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550412 external
https://www.cve.org/CVERecord?id=CVE-2026-109709 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109709 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109711 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550469 external
https://www.cve.org/CVERecord?id=CVE-2026-109711 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109711 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109712 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550468 external
https://www.cve.org/CVERecord?id=CVE-2026-109712 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109712 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109713 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550406 external
https://www.cve.org/CVERecord?id=CVE-2026-109713 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109713 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109715 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550403 external
https://www.cve.org/CVERecord?id=CVE-2026-109715 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109715 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109716 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550422 external
https://www.cve.org/CVERecord?id=CVE-2026-109716 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109716 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109717 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550433 external
https://www.cve.org/CVERecord?id=CVE-2026-109717 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109717 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109718 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550400 external
https://www.cve.org/CVERecord?id=CVE-2026-109718 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109718 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109719 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550424 external
https://www.cve.org/CVERecord?id=CVE-2026-109719 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109719 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109720 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550442 external
https://www.cve.org/CVERecord?id=CVE-2026-109720 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109720 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109721 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550478 external
https://www.cve.org/CVERecord?id=CVE-2026-109721 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109721 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109722 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550471 external
https://www.cve.org/CVERecord?id=CVE-2026-109722 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109722 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109723 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550426 external
https://www.cve.org/CVERecord?id=CVE-2026-109723 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109723 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109724 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550408 external
https://www.cve.org/CVERecord?id=CVE-2026-109724 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109724 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109725 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550467 external
https://www.cve.org/CVERecord?id=CVE-2026-109725 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109725 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109726 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550446 external
https://www.cve.org/CVERecord?id=CVE-2026-109726 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109726 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109727 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550451 external
https://www.cve.org/CVERecord?id=CVE-2026-109727 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109727 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109728 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550474 external
https://www.cve.org/CVERecord?id=CVE-2026-109728 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109728 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109729 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550420 external
https://www.cve.org/CVERecord?id=CVE-2026-109729 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109729 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109730 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550450 external
https://www.cve.org/CVERecord?id=CVE-2026-109730 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109730 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109732 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550455 external
https://www.cve.org/CVERecord?id=CVE-2026-109732 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109732 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109733 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550429 external
https://www.cve.org/CVERecord?id=CVE-2026-109733 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109733 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109736 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550470 external
https://www.cve.org/CVERecord?id=CVE-2026-109736 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109736 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109737 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550452 external
https://www.cve.org/CVERecord?id=CVE-2026-109737 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109737 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109738 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550417 external
https://www.cve.org/CVERecord?id=CVE-2026-109738 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109738 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109740 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550404 external
https://www.cve.org/CVERecord?id=CVE-2026-109740 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109740 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109741 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550419 external
https://www.cve.org/CVERecord?id=CVE-2026-109741 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109741 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109742 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550401 external
https://www.cve.org/CVERecord?id=CVE-2026-109742 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109742 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109743 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550480 external
https://www.cve.org/CVERecord?id=CVE-2026-109743 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109743 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109744 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550421 external
https://www.cve.org/CVERecord?id=CVE-2026-109744 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109744 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109745 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550410 external
https://www.cve.org/CVERecord?id=CVE-2026-109745 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109745 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109751 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550465 external
https://www.cve.org/CVERecord?id=CVE-2026-109751 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109751 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109752 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550434 external
https://www.cve.org/CVERecord?id=CVE-2026-109752 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109752 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109753 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550425 external
https://www.cve.org/CVERecord?id=CVE-2026-109753 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109753 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109754 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550464 external
https://www.cve.org/CVERecord?id=CVE-2026-109754 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109754 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109756 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550428 external
https://www.cve.org/CVERecord?id=CVE-2026-109756 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109756 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109757 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550418 external
https://www.cve.org/CVERecord?id=CVE-2026-109757 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109757 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109759 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550458 external
https://www.cve.org/CVERecord?id=CVE-2026-109759 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109759 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109760 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550440 external
https://www.cve.org/CVERecord?id=CVE-2026-109760 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109760 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109762 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550461 external
https://www.cve.org/CVERecord?id=CVE-2026-109762 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109762 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109763 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550431 external
https://www.cve.org/CVERecord?id=CVE-2026-109763 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109763 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
https://access.redhat.com/security/cve/CVE-2026-109782 self
https://bugzilla.redhat.com/show_bug.cgi?id=2550411 external
https://www.cve.org/CVERecord?id=CVE-2026-109782 external
https://nvd.nist.gov/vuln/detail/CVE-2026-109782 external
https://www.mozilla.org/security/advisories/mfsa2… external
https://www.mozilla.org/security/advisories/mfsa2… external
To clipboard 

{
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      "text": "Important"
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    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for firefox is now available for Red Hat Enterprise Linux 9.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nSecurity Fix(es):\n\n* libexpat: denial of service via crafted XML input (CVE-2026-45186)\n\n* firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704)\n\n* firefox: Use-after-free in the XML component (CVE-2026-109718)\n\n* firefox: Information disclosure in the PDF Viewer component (CVE-2026-109742)\n\n* firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715)\n\n* firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740)\n\n* firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706)\n\n* firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713)\n\n* firefox: Use-after-free in the DOM: Core \u0026 HTML component (CVE-2026-109724)\n\n* firefox: Sandbox escape due to uninitialized memory in the DOM: Web Serial component (CVE-2026-109745)\n\n* firefox: Mitigation bypass in the File Handling component (CVE-2026-109782)\n\n* firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component (CVE-2026-109709)\n\n* firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component (CVE-2026-109705)\n\n* firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-109738)\n\n* firefox: Sandbox escape due to race condition in the Networking component (CVE-2026-109757)\n\n* firefox: Use-after-free in the Storage: Bucket File System component (CVE-2026-109741)\n\n* firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)\n\n* firefox: Other issue in the DOM: File component (CVE-2026-109744)\n\n* firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716)\n\n* firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719)\n\n* firefox: Incorrect boundary conditions in the Layout component (CVE-2026-109753)\n\n* firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)\n\n* firefox: Privilege escalation in the DOM: Navigation component (CVE-2026-109756)\n\n* firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109733)\n\n* firefox: Mitigation bypass in the File Handling component (CVE-2026-109763)\n\n* firefox: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-109708)\n\n* firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717)\n\n* firefox: Use-after-free in the DOM: Workers component (CVE-2026-109752)\n\n* firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)\n\n* firefox: Mitigation bypass in the Networking: HTTP component (CVE-2026-109760)\n\n* firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720)\n\n* firefox: Use-after-free in the SVG component (CVE-2026-109726)\n\n* firefox: Integer overflow in the Graphics component (CVE-2026-109730)\n\n* firefox: Use-after-free in the Audio/Video component (CVE-2026-109727)\n\n* firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109737)\n\n* firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)\n\n* firefox: Site isolation issue in the Networking component (CVE-2026-109759)\n\n* firefox: Incorrect boundary conditions in the SVG component (CVE-2026-109762)\n\n* firefox: Incorrect boundary conditions in the DOM: Editor component (CVE-2026-109754)\n\n* firefox: Information disclosure in the Networking component (CVE-2026-109751)\n\n* firefox: Use-after-free in the DOM: Core \u0026 HTML component (CVE-2026-109725)\n\n* firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712)\n\n* firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711)\n\n* firefox: Frame poisoning in the Layout component (CVE-2026-109736)\n\n* firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722)\n\n* firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728)\n\n* firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721)\n\n* firefox: Privilege escalation in the Panning and Zooming component (CVE-2026-109743)\n\nBug Fix(es) and Enhancement(s):\n\n* Firefox ESR 153 rebase [rhel-9.8.z] (JIRA:RHEL-175155)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
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        "id": "CWE-356",
        "name": "Product UI does not Warn User of Unsafe Actions"
      },
      "discovery_date": "2026-10-13T12:55:49.909590+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2550411"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nMitigation bypass in the File Handling component",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "firefox: Mitigation bypass in the File Handling component",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
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          "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-109782"
        },
        {
          "category": "external",
          "summary": "RHBZ#2550411",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2550411"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-109782",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-109782"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-109782",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109782"
        },
        {
          "category": "external",
          "summary": "https://www.mozilla.org/security/advisories/mfsa2026-108/#CVE-2026-109782",
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-108/#CVE-2026-109782"
        },
        {
          "category": "external",
          "summary": "https://www.mozilla.org/security/advisories/mfsa2026-110/#CVE-2026-109782",
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-110/#CVE-2026-109782"
        }
      ],
      "release_date": "2026-10-13T12:29:36.025000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-26T04:16:53+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
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            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.ppc64le",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.src",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.x86_64",
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            "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.aarch64",
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            "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:89757"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.aarch64",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.ppc64le",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.src",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-0:153.5.0-1.el9_8.x86_64",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.aarch64",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.ppc64le",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debuginfo-0:153.5.0-1.el9_8.x86_64",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.aarch64",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.ppc64le",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-debugsource-0:153.5.0-1.el9_8.x86_64",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.aarch64",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.ppc64le",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:firefox-x11-0:153.5.0-1.el9_8.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "firefox: Mitigation bypass in the File Handling component"
    }
  ]
}



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