CVE-2026-4724
firefox: Undefined behavior in the Audio/Video component
Severity by source
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Ubuntu (medium).
Description
Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| chainguard | firefox | 149.0-r0 |
| rapidfort alpine 3.20 | thunderbird | 150.0-r0 |
| rapidfort alpine 3.21 | thunderbird | 150.0-r0 |
| rapidfort alpine 3.22 | thunderbird | 150.0-r0 |
| rapidfort alpine 3.23 | thunderbird | 150.0-r0 |
| rapidfort fedora 43 | firefox, firefox-langpacks, thunderbird and 1 more | 149.0.2-1.fc43 and 1 more |
| rapidfort ubuntu 20.04 | thunderbird | no fix listed |
| rapidfort ubuntu 22.04 | thunderbird | no fix listed |
| rapidfort ubuntu 24.04 | thunderbird | no fix listed |
| ubuntu 22.04 | thunderbird | no fix listed |
| wolfi | firefox | 149.0-r0 |
Show all 14 entries from 11 sources
| Source | Package | Fixed in |
|---|---|---|
| chainguard | firefox | 149.0-r0 |
| rapidfort alpine 3.20 | thunderbird | 150.0-r0 |
| rapidfort alpine 3.21 | thunderbird | 150.0-r0 |
| rapidfort alpine 3.22 | thunderbird | 150.0-r0 |
| rapidfort alpine 3.23 | thunderbird | 150.0-r0 |
| rapidfort fedora 43 | firefox | 149.0.2-1.fc43 |
| rapidfort fedora 43 | firefox-langpacks | 149.0.2-1.fc43 |
| rapidfort fedora 43 | thunderbird | 149.0.1-3.fc43 |
| rapidfort fedora 43 | thunderbird-librnp-rnp | 149.0.1-3.fc43 |
| rapidfort ubuntu 20.04 | thunderbird | no fix listed |
| rapidfort ubuntu 22.04 | thunderbird | no fix listed |
| rapidfort ubuntu 24.04 | thunderbird | no fix listed |
| ubuntu 22.04 | thunderbird | no fix listed |
| wolfi | firefox | 149.0-r0 |
References
- https://access.redhat.com/security/cve/CVE-2026-4724
- https://bugzilla.mozilla.org/show_bug.cgi?id=2014865
- https://nvd.nist.gov/vuln/detail/CVE-2026-4724
- https://www.cve.org/CVERecord?id=CVE-2026-4724
- https://www.mozilla.org/en-US/security/advisories/mfsa2026-20/#CVE-2026-4724
- https://www.mozilla.org/security/advisories/mfsa2026-20/
- https://www.mozilla.org/security/advisories/mfsa2026-20/#CVE-2026-4724
- https://www.mozilla.org/security/advisories/mfsa2026-23/