RHSA-2026:89758

Vulnerability from csaf_redhat - Published: 2026-10-26 03:07 - Updated: 2026-10-31 23:04
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 10. 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) * expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer (CVE-2026-77214) * firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704) * firefox: Use-after-free in the XML component (CVE-2026-109718) * 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: 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 JavaScript Engine: JIT component (CVE-2026-109729) * 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: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723) * 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: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707) * 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: Use-after-free in the DOM: Streams component (CVE-2026-109732) * 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: 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) Bug Fix(es) and Enhancement(s): * Firefox ESR 153 rebase [rhel-10.2.z] (JIRA:RHEL-175166) 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-10.2.Z:firefox-0:153.5.0-1.el10_2.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-0:153.5.0-1.el10_2.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-0:153.5.0-1.el10_2.s390x —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-0:153.5.0-1.el10_2.src —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-0:153.5.0-1.el10_2.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debuginfo-0:153.5.0-1.el10_2.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debuginfo-0:153.5.0-1.el10_2.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debuginfo-0:153.5.0-1.el10_2.s390x —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debuginfo-0:153.5.0-1.el10_2.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debugsource-0:153.5.0-1.el10_2.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debugsource-0:153.5.0-1.el10_2.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debugsource-0:153.5.0-1.el10_2.s390x —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-10.2.Z:firefox-debugsource-0:153.5.0-1.el10_2.x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-77214

A flaw was found in expat. A remote attacker can exploit this vulnerability through repeated parse buffer operations with unvalidated buffer lengths, causing a heap buffer over-read. This issue primarily leads to information disclosure by leaking adjacent heap memory contents, which could assist in bypassing security mitigations such as Address Space Layout Randomization (ASLR), or result in a Denial of Service (DoS) by crashing the application.

8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
CWE-125 - Out-of-bounds Read
Affected products
Fixed 13 products, the same list as for CVE-2026-45186
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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 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 13 products, the same list as for CVE-2026-45186
Threats
Impact Important
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 13 products, the same list as for CVE-2026-45186
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:89758 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=2547476 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=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=2550412 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550413 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550420 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=2550426 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=2550438 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=2550455 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=2550471 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550474 external
https://bugzilla.redhat.com/show_bug.cgi?id=2550478 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-2026-77214 self
https://bugzilla.redhat.com/show_bug.cgi?id=2547476 external
https://www.cve.org/CVERecord?id=CVE-2026-77214 external
https://nvd.nist.gov/vuln/detail/CVE-2026-77214 external
https://github.com/libexpat/libexpat/commit/13c5f… external
https://github.com/libexpat/libexpat/pull/1393 external
https://www.vulncheck.com/advisories/libexpat-hea… 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
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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
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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-2026-109740 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
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        "text": "An update for firefox is now available for Red Hat Enterprise Linux 10.\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"
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        "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* expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer (CVE-2026-77214)\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: 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: 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 JavaScript Engine: JIT component (CVE-2026-109729)\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: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)\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: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)\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: Use-after-free in the DOM: Streams component (CVE-2026-109732)\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: 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\nBug Fix(es) and Enhancement(s):\n\n* Firefox ESR 153 rebase [rhel-10.2.z] (JIRA:RHEL-175166)\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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          "category": "impact",
          "details": "Important"
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      ],
      "title": "firefox: Integer overflow in the Graphics component"
    },
    {
      "cve": "CVE-2026-109732",
      "cwe": {
        "id": "CWE-825",
        "name": "Expired Pointer Dereference"
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      "discovery_date": "2026-10-13T13:04:38.140627+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
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        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nUse-after-free in the DOM: Streams component",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "firefox: Use-after-free in the DOM: Streams 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": {
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-109732"
        },
        {
          "category": "external",
          "summary": "RHBZ#2550455",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2550455"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-109732",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-109732"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-109732",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109732"
        },
        {
          "category": "external",
          "summary": "https://www.mozilla.org/security/advisories/mfsa2026-108/#CVE-2026-109732",
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-108/#CVE-2026-109732"
        },
        {
          "category": "external",
          "summary": "https://www.mozilla.org/security/advisories/mfsa2026-110/#CVE-2026-109732",
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-110/#CVE-2026-109732"
        }
      ],
      "release_date": "2026-10-13T12:29:20.984000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-26T03:07:15+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": [
            "AppStream-10.2.Z:firefox-0:153.5.0-1.el10_2.aarch64",
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            "AppStream-10.2.Z:firefox-0:153.5.0-1.el10_2.x86_64",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:89758"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "firefox: Use-after-free in the DOM: Streams component"
    },
    {
      "cve": "CVE-2026-109740",
      "cwe": {
        "id": "CWE-653",
        "name": "Improper Isolation or Compartmentalization"
      },
      "discovery_date": "2026-10-13T12:54:09.949431+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2550404"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Firefox. Incorrect boundary condition handling in the Win32 widget component allows an attacker to escape the browser\u0027s 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.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated as Important severity because escaping the client sandbox allows an attacker who has compromised a content process to execute arbitrary code with the privileges of the host process. However, the vulnerable boundary condition resides exclusively within the Win32 widget subsystem developed for Microsoft Windows. Red Hat Enterprise Linux builds of Firefox and Thunderbird utilize the GTK windowing implementation and do not include the Windows-specific code, preventing exposure in Red Hat environments.",
          "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": {
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          "AppStream-10.2.Z:firefox-debugsource-0:153.5.0-1.el10_2.s390x",
          "AppStream-10.2.Z:firefox-debugsource-0:153.5.0-1.el10_2.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-109740"
        },
        {
          "category": "external",
          "summary": "RHBZ#2550404",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2550404"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-109740",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-109740"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-109740",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109740"
        },
        {
          "category": "external",
          "summary": "https://www.mozilla.org/security/advisories/mfsa2026-108/#CVE-2026-109740",
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-108/#CVE-2026-109740"
        },
        {
          "category": "external",
          "summary": "https://www.mozilla.org/security/advisories/mfsa2026-110/#CVE-2026-109740",
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-110/#CVE-2026-109740"
        }
      ],
      "release_date": "2026-10-13T12:29:26.143000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-26T03:07:15+00:00",
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2026:89758"
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      "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",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget"
    }
  ]
}



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