CVE-2021-38491

high

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

8.0

Description

Mixed-content checks were unable to analyze opaque origins which led to some mixed content being loaded. This vulnerability affects Firefox < 92.

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-38491

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-38491.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202109-2

OS	Version	Status	Fixed in
arch		fixed	`92.0-1`
sles		affected
debian	sid	fixed	`92.0-1`

Verify integrity in audit chain (admin only). AS-IS.