CVE-2022-22761

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.

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-693

Affected software

Vendor	Product	Versions
Mozilla	Firefox	>= unspecified, < 97
Mozilla	Thunderbird	>= unspecified, < 91.6
Mozilla	Firefox ESR	>= unspecified, < 91.6

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1745566Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-04/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-06/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1745566Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-04/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-06/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1745566Issue Tracking, Vendor Advisory

Timeline

Published: Dec 22, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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