CVE-2026-4691 (GCVE-0-2026-4691)

Vulnerability from cvelistv5 – Published: 2026-03-24 12:30 – Updated: 2026-05-07 14:50
VLAI?
Title
Use-after-free in the CSS Parsing and Computation component
Summary
Use-after-free in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Unaffected: 115.34 , ≤ 115.* (rpm)
Unaffected: 140.9 , ≤ 140.* (rpm)
Unaffected: 149 , ≤ * (rpm)
Create a notification for this product.
    Mozilla Thunderbird Unaffected: 140.9 , ≤ 140.* (rpm)
Unaffected: 149 , ≤ * (rpm)
Create a notification for this product.
Credits
Fabius Artrel
Show details on NVD website
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