CVE-2026-8960 Security Details

CVE ID

CVE-2026-8960

CWE

CWE-290

CVE Description

Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Published

May 21, 2026

CVSS Score & Severity

2.1Low

CVSS Vector

CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.037%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Affected Ecosystems

affected

Source

National Vulnerability Database

References

Bugzilla #1940116PROJECT

mozilla.orgPROJECT

mozilla.orgPROJECT