Vulnerability-Lookup

OESA-2026-2756 (CVE-2026-12289)

Vulnerability from osv_openeuler – Published: 2026-06-24 11:11 – Updated: 2026-08-06 11:11 – Source website

Summary

thunderbird security update

Details

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12289)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12290)

Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12291)

Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12292)

Sandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12294)

Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12295)

Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12296)

Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12297)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12298)

JIT miscompilation in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12299)

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12302)

Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12304)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12305)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12306)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12307)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12308)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12309)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12310)

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12311)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12312)

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12314)

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12315)

Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12324)

Denial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12325)

Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12327)

Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12328)

Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.(CVE-2026-12329)

Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12.(CVE-2026-12330)

Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.(CVE-2026-8388)

Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.(CVE-2026-8391)

Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.(CVE-2026-8401)

Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8946)

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8947)

Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8949)

Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8950)

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8953)

Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8954)

Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8955)

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8956)

Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8957)

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8958)

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8959)

Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8961)

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8962)

Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8968)

Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8970)

Memory safety bugs present in Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8974)

Memory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8975)

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12289	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12290	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12291	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12292	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12294	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12295	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12296	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12297	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12298	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12299	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12302	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12304	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12305	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12306	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12307	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12308	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12309	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12310	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12311	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12312	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12313	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12314	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12315	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12324	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12325	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12327	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12328	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12329	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-12330	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8388	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8391	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8401	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8946	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8947	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8949	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8950	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8953	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8954	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8955	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8956	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8957	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8958	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8959	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8961	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8962	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8968	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8970	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8974	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8975	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "thunderbird-140.12.0-1.oe2403sp3.aarch64.rpm",
          "thunderbird-debuginfo-140.12.0-1.oe2403sp3.aarch64.rpm",
          "thunderbird-debugsource-140.12.0-1.oe2403sp3.aarch64.rpm",
          "thunderbird-librnp-rnp-140.12.0-1.oe2403sp3.aarch64.rpm",
          "thunderbird-wayland-140.12.0-1.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "thunderbird-140.12.0-1.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "thunderbird-140.12.0-1.oe2403sp3.x86_64.rpm",
          "thunderbird-debuginfo-140.12.0-1.oe2403sp3.x86_64.rpm",
          "thunderbird-debugsource-140.12.0-1.oe2403sp3.x86_64.rpm",
          "thunderbird-librnp-rnp-140.12.0-1.oe2403sp3.x86_64.rpm",
          "thunderbird-wayland-140.12.0-1.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "thunderbird",
        "purl": "pkg:rpm/openEuler/thunderbird\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "140.12.0-1.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "Mozilla Thunderbird is a standalone mail and newsgroup client.\r\n\r\nSecurity Fix(es):\n\nPrivilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12289)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12290)\n\nUse-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12291)\n\nIncorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12292)\n\nSandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12294)\n\nSandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12295)\n\nSandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12296)\n\nSandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12297)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12298)\n\nJIT miscompilation in the DOM: Core \u0026amp; HTML component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12299)\n\nMitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12302)\n\nSame-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12304)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12305)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12306)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12307)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12308)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12309)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12310)\n\nInformation disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12311)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12312)\n\nInformation disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12313)\n\nMemory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12314)\n\nMitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12315)\n\nIncorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12324)\n\nDenial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12325)\n\nMemory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12327)\n\nMemory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.(CVE-2026-12328)\n\nMemory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.(CVE-2026-12329)\n\nIncorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12.(CVE-2026-12330)\n\nIncorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.(CVE-2026-8388)\n\nOther issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.(CVE-2026-8391)\n\nSandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.(CVE-2026-8401)\n\nIncorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8946)\n\nUse-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8947)\n\nInteger overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8949)\n\nSame-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8950)\n\nSandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8953)\n\nIncorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8954)\n\nPrivilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8955)\n\nInteger overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8956)\n\nPrivilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8957)\n\nInformation disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8958)\n\nSandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8959)\n\nSpoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8961)\n\nMitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8962)\n\nDenial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8968)\n\nPrivilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8970)\n\nMemory safety bugs present in Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8974)\n\nMemory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8975)",
  "id": "OESA-2026-2756",
  "modified": "2026-08-06T11:11:40Z",
  "published": "2026-06-24T11:11:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2756"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12289"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12290"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12291"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12292"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12294"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12295"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12296"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12297"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12298"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12299"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12302"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12304"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12305"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12306"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12307"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12308"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12309"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12310"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12311"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12312"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12313"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12314"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12315"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12324"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12325"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12327"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12328"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12329"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12330"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8388"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8391"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8401"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8946"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8947"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8949"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8950"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8953"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8954"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8955"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8956"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8957"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8958"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8959"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8961"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8962"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8968"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8970"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8974"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8975"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "thunderbird security update",
  "upstream": [
    "CVE-2026-12289",
    "CVE-2026-12290",
    "CVE-2026-12291",
    "CVE-2026-12292",
    "CVE-2026-12294",
    "CVE-2026-12295",
    "CVE-2026-12296",
    "CVE-2026-12297",
    "CVE-2026-12298",
    "CVE-2026-12299",
    "CVE-2026-12302",
    "CVE-2026-12304",
    "CVE-2026-12305",
    "CVE-2026-12306",
    "CVE-2026-12307",
    "CVE-2026-12308",
    "CVE-2026-12309",
    "CVE-2026-12310",
    "CVE-2026-12311",
    "CVE-2026-12312",
    "CVE-2026-12313",
    "CVE-2026-12314",
    "CVE-2026-12315",
    "CVE-2026-12324",
    "CVE-2026-12325",
    "CVE-2026-12327",
    "CVE-2026-12328",
    "CVE-2026-12329",
    "CVE-2026-12330",
    "CVE-2026-8388",
    "CVE-2026-8391",
    "CVE-2026-8401",
    "CVE-2026-8946",
    "CVE-2026-8947",
    "CVE-2026-8949",
    "CVE-2026-8950",
    "CVE-2026-8953",
    "CVE-2026-8954",
    "CVE-2026-8955",
    "CVE-2026-8956",
    "CVE-2026-8957",
    "CVE-2026-8958",
    "CVE-2026-8959",
    "CVE-2026-8961",
    "CVE-2026-8962",
    "CVE-2026-8968",
    "CVE-2026-8970",
    "CVE-2026-8974",
    "CVE-2026-8975"
  ]
}

CVE-2026-12302 (GCVE-0-2026-12302)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-16 17:30

Title

Mitigation bypass in the DOM: Security component

Summary

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 17:30 UTC

CWE

CWE-693 - Protection Mechanism Failure

Assigner

mozilla mitre root

References

6 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2034489
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 115.37 , ≤ 115.* (rpm) Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

lebr0nli

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
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          "vendor": "Mozilla",
          "versions": [
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        }
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        {
          "lang": "en",
          "value": "lebr0nli"
        }
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        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12."
            }
          ],
          "value": "Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-16T16:08:30.874Z",
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2034489"
        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-57/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-58/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-59/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-60/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-61/"
        }
      ],
      "title": "Mitigation bypass in the DOM: Security component"
    }
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    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-12302",
    "datePublished": "2026-06-16T11:52:35.893Z",
    "dateReserved": "2026-06-15T15:08:11.416Z",
    "dateUpdated": "2026-06-16T17:30:18.574Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-12304 (GCVE-0-2026-12304)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-16 18:55

Title

Same-origin policy bypass in the Networking: Cookies component

Summary

Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 18:50 UTC

CWE

CWE-346 - Origin Validation Error

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2034944
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Yaqoub Aldurayhim

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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                "id": "CVE-2026-12304",
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            "descriptions": [
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                "cweId": "CWE-346",
                "description": "CWE-346 Origin Validation Error",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-16T18:55:05.212Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
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          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
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          "lang": "en",
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          "lang": "en",
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              "base64": false,
              "type": "text/html",
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            }
          ],
          "value": "Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12."
        }
      ],
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        "dateUpdated": "2026-06-16T16:08:31.961Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2034944"
        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-57/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-58/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-60/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-61/"
        }
      ],
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    }
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    "datePublished": "2026-06-16T11:52:37.817Z",
    "dateReserved": "2026-06-15T15:08:12.234Z",
    "dateUpdated": "2026-06-16T18:55:05.212Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-12305 (GCVE-0-2026-12305)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-18 18:00

Title

Memory safety bug fixed in Firefox 152

Summary

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 17:30 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2037290
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Zijie Zhao

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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          "dateUpdated": "2026-06-16T17:31:45.920Z",
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      ],
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CVE-2026-12306 (GCVE-0-2026-12306)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-18 18:00

Title

Memory safety bug fixed in Firefox 152

Summary

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 17:36 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2037323
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Mihalis Haatainen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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CVE-2026-12307 (GCVE-0-2026-12307)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-18 18:00

Title

Memory safety bug fixed in Firefox 152

Summary

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 17:36 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2038133
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Atsushi Sada

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
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CVE-2026-12308 (GCVE-0-2026-12308)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-18 18:00

Title

Memory safety bug fixed in Firefox 152

Summary

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 17:39 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2038302
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Mihalis Haatainen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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              "attackComplexity": "LOW",
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CVE-2026-12309 (GCVE-0-2026-12309)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-18 18:00

Title

Memory safety bug fixed in Firefox 152

Summary

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 17:39 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2038476
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Yaqoub Aldurayhim

Show details on NVD website

JSON

To clipboard

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  "containers": {
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        }
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}

CVE-2026-12310 (GCVE-0-2026-12310)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-18 18:00

Title

Memory safety bug fixed in Firefox 152

Summary

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 18:16 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-416 - Use After Free
CWE-787 - Out-of-bounds Write
CWE-125 - Out-of-bounds Read

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2039707
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Carl Pearson

Show details on NVD website

JSON

To clipboard

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  "containers": {
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CVE-2026-12311 (GCVE-0-2026-12311)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-16 16:08

Title

Information disclosure, sandbox escape in the Security: Process Sandboxing component

Summary

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

4.7 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 14:57 UTC

CWE

CWE-688 - Function Call With Incorrect Variable or Reference as Argument
CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2040177
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Yaqoub Aldurayhim

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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CVE-2026-12312 (GCVE-0-2026-12312)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-18 18:00

Title

Memory safety bug fixed in Firefox 152

Summary

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 18:14 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla mitre root

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2040383
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Rintaro Kawasugi

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2026-2756 (CVE-2026-12289)

CVE-2026-12302 (GCVE-0-2026-12302)

CVE-2026-12304 (GCVE-0-2026-12304)

CVE-2026-12305 (GCVE-0-2026-12305)

CVE-2026-12306 (GCVE-0-2026-12306)

CVE-2026-12307 (GCVE-0-2026-12307)

CVE-2026-12308 (GCVE-0-2026-12308)

CVE-2026-12309 (GCVE-0-2026-12309)

CVE-2026-12310 (GCVE-0-2026-12310)

CVE-2026-12311 (GCVE-0-2026-12311)

CVE-2026-12312 (GCVE-0-2026-12312)

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Related by attack behaviour