CVE-2026-2771

Description

Undefined behavior in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Affected Platforms

Weakness Type

NVD-CWE-noinfo, CWE-125

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2014593
• https://www.mozilla.org/security/advisories/mfsa2026-13/
• https://www.mozilla.org/security/advisories/mfsa2026-14/
• https://www.mozilla.org/security/advisories/mfsa2026-15/
• https://www.mozilla.org/security/advisories/mfsa2026-16/
• https://www.mozilla.org/security/advisories/mfsa2026-17/