CVE-2026-109753
HIGHCVSS 8.1Description
Incorrect boundary conditions in the Layout component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Timeline
Published:October 13th, 2026 1:17 PM
Last modified:October 15th, 2026 8:17 PM
CVSS Scoring
CVSS v3: 8.1 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://bugzilla.mozilla.org/show_bug.cgi?id=2068441
- https://www.mozilla.org/security/advisories/mfsa2026-106/
- https://www.mozilla.org/security/advisories/mfsa2026-107/
- https://www.mozilla.org/security/advisories/mfsa2026-108/
- https://www.mozilla.org/security/advisories/mfsa2026-109/
- https://www.mozilla.org/security/advisories/mfsa2026-110/
Source: NIST NVD · Data may lag official sources by up to one minute