CVE-2022-26485

HighCVSS 8.8/10Known exploited (CISA KEV)Last modified Aug 19, 2026

Description

Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
Mozilla	Firefox	>= unspecified, < 97.0.2
Mozilla	Firefox ESR	>= unspecified, < 91.6.1
Mozilla	Firefox for Android	>= unspecified, < 97.3.0
Mozilla	Thunderbird	>= unspecified, < 91.6.2
Mozilla	Focus	>= unspecified, < 97.3.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1758062Exploit, Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-09/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1758062Exploit, Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-09/Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26485US Government Resource

Timeline

Published: Dec 22, 2022
Last modified: Aug 19, 2026
Added to CISA KEV: Mar 7, 2022
NVD status: Analyzed

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