CVE-2026-109719: Vulnerability in Mozilla Firefox
Description
Race condition, use-after-free in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
CVSS v3.1
Score 4.2medium
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
pkg:github/mozilla/firefox-esrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-109719 is a vulnerability involving a race condition and use-after-free in the Graphics: CanvasWebGL component of Mozilla Firefox. This flaw could potentially lead to memory corruption or other unintended behavior. Mozilla has fixed this vulnerability in Firefox version 158 and in the Extended Support Release (ESR) versions 115.43 and 153.5.
Potential Impact
The vulnerability could allow for memory corruption due to a race condition and use-after-free in the CanvasWebGL graphics component. The exact impact is not detailed in the provided data, and no known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available. Users should update to Firefox 158, Firefox ESR 115.43, or Firefox ESR 153.5 or later to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:29:27.173Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-107/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c432cdf04f65661d4d5
Added to database: 10/13/2026, 13:04:03 UTC
Last enriched: 10/13/2026, 14:18:47 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 3
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