CVE-2026-74954

HighCVSS 7.5

Published: 18/08/2026(UTC)Updated: 19/08/2026(UTC)Translated: 19/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.26%

17th percentile - higher than 17% of all known CVEs

Summary

Information disclosure due to side-channel in the Storage: Cache API component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Risk Assessment

An attacker may gain unauthorized access to data stored in the cache, potentially leading to leakage of sensitive information.

Recommendation

Update Firefox or Thunderbird to a patched version.

Original NVD description (English source)

Information disclosure due to side-channel in the Storage: Cache API component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.