CVE-2026-109776: Vulnerability in Mozilla Firefox
Description
Race condition in the XPCOM component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition within the XPCOM component of Mozilla Firefox. Race conditions can lead to unpredictable behavior and potential security issues. Mozilla has released fixes for this vulnerability in Firefox 158 and Firefox ESR 153.5, mitigating the risk.
Potential Impact
The vulnerability could potentially allow an attacker to cause unintended behavior in the affected component, which might lead to security issues. However, no active exploitation has been reported. The impact is mitigated by the availability of official fixes.
Mitigation Recommendations
Users and administrators should update Firefox to version 158 or later, or Firefox ESR 153.5 or later, to remediate this vulnerability. Applying these official fixes fully mitigates the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:49:06.510Z
- 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: 6ace2c512cdf04f65661d576
Added to database: 10/13/2026, 13:04:17 UTC
Last enriched: 10/13/2026, 13:19:11 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 7
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