Information Disclosure in Firefox Due to Cache API Issues
CVE-2026-74954

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 18 August 2026

What is CVE-2026-74954?

An information disclosure vulnerability has been identified in the Cache API component of Firefox. This issue arises due to side-channel information leak, allowing unauthorized access to sensitive data. The vulnerability has been addressed in Firefox version 154 and Firefox ESR version 153.1, ensuring enhanced security for users by preventing potential exploitation. Users are advised to update their browsers to mitigate risks associated with this vulnerability.