PT-2026-49682 · Mozilla · Firefox

Evyatar · Published 2026-06-16 · Updated 2026-06-16 · CVE-2026-12313

Mitre

CVSS v3.1

4.7

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

CVE-2026-12313

Affected Products

Firefox

References · 4

• https://mozilla.org/security/advisories/mfsa2026-57 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-58 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-12313 · Security Note
• https://bugzilla.mozilla.org/show_bug.cgi?id=2040477 · Note