CVE-2026-100759

Uninitialized memory in the Storage: Quota Manager component of Firefox can lead to potential information disclosure or unexpected behavior. Users of affected Firefox versions should prioritize updating to the fixed versions (Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17) to mitigate risks associated with this vulnerability. Organizations relying on Firefox for secure browsing should ensure their deployments are up to date to protect against potential exploitation.