Information Disclosure in Password Manager Component of Mozilla Firefox
CVE-2026-12320

4.3MEDIUM

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
16 June 2026

What is CVE-2026-12320?

A vulnerability was identified in the Password Manager component of Mozilla Firefox, which could allow unauthorized access to sensitive information. This issue was resolved in Firefox version 152, ensuring enhanced security measures to protect user credentials and personal data from being inadvertently exposed.

Affected Version(s)

Firefox 152

Thunderbird 152

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2027572
https://www.mozilla.org/security/advisories/mfsa2026-57/
https://www.mozilla.org/security/advisories/mfsa2026-60/

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Av0id
.