CVE-2026-6765

Information disclosure in the Form Autofill component

State: Published
Severity: 5.3 Medium
Published: Apr 21, 2026
Updated: May 27, 2026
Reserved: Apr 21, 2026

Description

Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-359 Exposure of Private Personal Information to an Unauthorized Actor

Affected Products

Product	Versions
FirefoxMozilla	140.10 through 140.*Not affected 150 and laterNot affected
ThunderbirdMozilla	140.10 through 140.*Not affected 150 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2022419
https://www.mozilla.org/security/advisories/mfsa2026-30/
https://www.mozilla.org/security/advisories/mfsa2026-32/
https://www.mozilla.org/security/advisories/mfsa2026-33/
https://www.mozilla.org/security/advisories/mfsa2026-34/

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