CVE-2026-117992

medium

Description

Information disclosure in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

References

https://www.mozilla.org/security/advisories/mfsa2026-122/

https://www.mozilla.org/security/advisories/mfsa2026-121/

https://www.mozilla.org/security/advisories/mfsa2026-120/

https://www.mozilla.org/security/advisories/mfsa2026-119/

https://www.mozilla.org/security/advisories/mfsa2026-118/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-111023

https://bugzilla.mozilla.org/show_bug.cgi?id=2079709

Details

Source: Mitre, NVD

Published: 2026-10-27

Updated: 2026-10-27

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N