CVE Catalog

CVE-2026-8950

Critical
Published: Translated: NVD NIST

Summary

A vulnerability allowing same-origin policy bypass in the Networking: HTTP component. It was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Risk Assessment

Bypassing the same-origin policy may lead to unauthorized access to user data, posing a significant security risk to web applications.

Recommendation

It is recommended to update to the latest versions of Firefox and Thunderbird to mitigate this vulnerability.

Related vulnerabilities

Original NVD description (English source)

Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS