VULNERABILITY INTELLIGENCE

CVE-2026-8971

CVSS score6.5 MEDIUM
EPSS probability0.21%
CISA KEVNot currently listed
Published2026-05-19
Last modified2026-07-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Weakness classification

  • CWE-346: Origin Validation Error

Primary references