CVE-2026-109711: Vulnerability in Mozilla Firefox
Description
Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
CVSS v3.1
Score 5.4medium
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition within the Canvas2D graphics component of Mozilla Firefox. Such a flaw can potentially lead to memory corruption issues. Mozilla has released fixes for this vulnerability in Firefox 158 and Firefox ESR 153.5, as documented in their security advisories MFSA2026-106 and MFSA2026-108.
Potential Impact
The vulnerability could allow an attacker to cause memory corruption, which might lead to application crashes or potentially arbitrary code execution. However, no active exploitation has been reported.
Mitigation Recommendations
Users should update to Firefox 158 or later, or Firefox ESR 153.5 or later, to remediate this vulnerability. The vendor has provided official fixes as per their security advisories.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:29:19.916Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c402cdf04f65661caf8
Added to database: 10/13/2026, 13:04:00 UTC
Last enriched: 10/13/2026, 14:19:25 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 2
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