CVE-2026-117933

Frame poisoning in the CSS Parsing and Computation component

State: Published
Severity: Not scored
Published: Oct 27, 2026
Updated: Oct 27, 2026
Reserved: Oct 27, 2026

Description

Frame poisoning in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
FirefoxMozilla	153.6 through 153.*Not affected 159 and laterNot affected
ThunderbirdMozilla	153.6 through 153.*Not affected 159 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2081976
https://www.mozilla.org/security/advisories/mfsa2026-118/
https://www.mozilla.org/security/advisories/mfsa2026-120/
https://www.mozilla.org/security/advisories/mfsa2026-121/
https://www.mozilla.org/security/advisories/mfsa2026-122/

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