CVE-2026-74981

Public on 2026-08-18

Modified on 2026-08-22

Description

Site isolation issue in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Severity

Medium

See what this means

CVSS v3 Base Score

4.7

See breakdown

Affected Packages

Platform	Package	Status
Amazon Linux 2 - Firefox Extra	firefox	Not Affected
Amazon Linux 2023	firefox	Not Affected
Amazon Linux 2 - Firefox Extra	firefox-amzn-policies-generic	Not Affected

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	4.7	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-74981 Mitre: CVE-2026-74981