PT-2026-33940 · Mozilla · Firefox

Xuehao Guo · Published 2026-04-21 · Updated 2026-04-21 · CVE-2026-6754

Mitre

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.

Related Identifiers

CVE-2026-6754

Affected Products

Firefox

References · 5

• https://mozilla.org/security/advisories/mfsa2026-32 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-31 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-30 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6754 · Security Note
• https://bugzilla.mozilla.org/show_bug.cgi?id=2027541 · Note