CVE-2022-29916

State: Published
Severity: 6.5 Medium
Published: Dec 22, 2022
Updated: Apr 15, 2025
Reserved: Apr 29, 2022

Description

Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
ThunderbirdMozilla	before 91.9Affected
Firefox ESRMozilla	before 91.9Affected
FirefoxMozilla	before 100Affected

References

https://www.mozilla.org/security/advisories/mfsa2022-16/
https://www.mozilla.org/security/advisories/mfsa2022-18/
https://www.mozilla.org/security/advisories/mfsa2022-17/
https://bugzilla.mozilla.org/show_bug.cgi?id=1760674

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