CVE-2022-42931

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% 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-312

Description

Logins saved by Firefox should be managed by the Password Manager component which uses encryption to save files on-disk. Instead, the username (not password) was saved by the Form Manager to an unencrypted file on disk. This vulnerability affects Firefox < 106.

Affected products

Mozilla Firefox: before 106.0 — fixed in 106.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 106.0. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1780571
https://www.mozilla.org/security/advisories/mfsa2022-44/
https://bugzilla.mozilla.org/show_bug.cgi?id=1780571
https://www.mozilla.org/security/advisories/mfsa2022-44/
https://bugzilla.mozilla.org/show_bug.cgi?id=1780571

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