CVE-2022-22754

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-22 · updated 2026-06-17
Weakness: CWE-863

Description

If a user installed an extension of a particular type, the extension could have auto-updated itself and while doing so, bypass the prompt which grants the new version the new requested permissions. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.

Affected products

Mozilla Firefox: before 97.0 — fixed in 97.0
Mozilla Firefox ESR: before 91.6 — fixed in 91.6
Mozilla Thunderbird: before 91.6 — fixed in 91.6

How to fix

Upgrade to a fixed version: Mozilla Firefox 97.0; Mozilla Firefox ESR 91.6; Mozilla Thunderbird 91.6. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1750565
https://www.mozilla.org/security/advisories/mfsa2022-04/
https://www.mozilla.org/security/advisories/mfsa2022-05/
https://www.mozilla.org/security/advisories/mfsa2022-06/
https://bugzilla.mozilla.org/show_bug.cgi?id=1750565
https://www.mozilla.org/security/advisories/mfsa2022-04/
https://www.mozilla.org/security/advisories/mfsa2022-05/
https://www.mozilla.org/security/advisories/mfsa2022-06/

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