PT-2026-49673 · Mozilla · Firefox

Yaqoub Aldurayhim · Published 2026-06-16 · Updated 2026-06-16 · CVE-2026-12304

NVD

Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.

Related Identifiers

CVE-2026-12304

Affected Products

Firefox

References · 4

• https://mozilla.org/security/advisories/mfsa2026-57 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-12304 · Security Note
• https://mozilla.org/security/advisories/mfsa2026-58 · Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=2034944 · Note