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🛡️ MGASA-2026-0242 — firefox (CVE-2026-12289 +28 more)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Updated firefox, firefox-l10n, rootcerts, nss packages fix security vulnerabilities

The updated packages fix security vulnerabilities:

Privilege escalation in the Graphics: WebRender component.

(CVE-2026-12289)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12290)

Use-after-free in the Networking: HTTP component. (CVE-2026-12291)

Incorrect boundary conditions in the Web Audio component.

(CVE-2026-12292)

Sandbox escape in the DOM: Workers component. (CVE-2026-12294)

Sandbox escape in the DOM: Navigation component. (CVE-2026-12295)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12298)

Sandbox escape in the Security: Process Sandboxing component.

(CVE-2026-12296)

Sandbox escape due to incorrect boundary conditions in the Networking

component. (CVE-2026-12297)

JIT miscompilation in the DOM: Core & HTML component. (CVE-2026-12299)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12329)

Mitigation bypass in the DOM: Security component. (CVE-2026-12302)

Same-origin policy bypass in the Networking: Cookies component.

(CVE-2026-12304)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12305)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12306)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12307)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12308)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12309)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12310)

Information disclosure, sandbox escape in the Security: Process

Sandboxing component. (CVE-2026-12311)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12312)

Information disclosure, sandbox escape in the Security: Process

Sandboxing component. (CVE-2026-12313)

Memory safety bug fixed in Firefox ESR 140.12. (CVE-2026-12314)

Mitigation bypass in the DOM: Security component. (CVE-2026-12315)

Incorrect boundary conditions in the Internationalization component.

(CVE-2026-12330)

Incorrect boundary conditions in the Graphics: CanvasWebGL component.

(CVE-2026-12324)

Denial-of-service in the Graphics: ImageLib component. (CVE-2026-12325)

Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12,

Firefox 152 and Thunderbird 152. (CVE-2026-12327)

Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12,

Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152.

(CVE-2026-12328)

Affected software

MGASA-2026-0242 is recorded against 4 packages.

  • firefox (fixed in 140.12.0-1.mga9)
  • firefox-l10n (fixed in 140.12.0-1.mga9)
  • nss (fixed in 3.125.0-1.mga9)
  • rootcerts (fixed in 20260611.00-1.mga9)

Timeline and source

Published on 13 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

advisories.mageia.org (Advisory)
bugs.mageia.org (Report)
firefox-source-docs.mozilla.org (Web)
www.firefox.com (Web)
www.mozilla.org (Advisory)

Other advisories for this package

firefox has other advisories on record. If you are patching this one, these are worth checking on the same host:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-13
Updated 2026-08-20
Modified 2026-07-13
Fix URL N/A

Affected Packages

Software From version Fixed in
firefox — 140.12.0-1.mga9
firefox-l10n — 140.12.0-1.mga9
nss — 3.125.0-1.mga9
rootcerts — 20260611.00-1.mga9

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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