CVE-2026-8966

Information disclosure in the IP Protection component

State: Published
Severity: 7.5 High
Published: May 19, 2026
Updated: May 20, 2026
Reserved: May 19, 2026

Description

Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
FirefoxMozilla	151 and laterNot affected
ThunderbirdMozilla	151 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2025849
https://www.mozilla.org/security/advisories/mfsa2026-46/
https://www.mozilla.org/security/advisories/mfsa2026-50/

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.