Information Disclosure in WebRTC Component of Firefox by Mozilla
CVE-2026-74958

Currently unrated

Key Information:

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

What is CVE-2026-74958?

The WebRTC component in Mozilla Firefox has a vulnerability that allows for potential information disclosure. This issue affects specific versions of the browser and has been addressed in updates. Users are encouraged to update to Firefox 154 or Firefox ESR 153.1 to mitigate any risks associated with this vulnerability.

Affected Version(s)

Firefox 153.1

Firefox 154

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2045368

https://www.mozilla.org/security/advisories/mfsa2026-74/

https://www.mozilla.org/security/advisories/mfsa2026-77/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Aug 18, 2026
Vulnerability Reserved
Aug 17, 2026

Credit

Tomoya Nakanishi

CVE-2026-74958 Data

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