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Vulnerabilities / CVE-2026-4725

critical

CVE-2026-4725

firefox: Sandbox escape due to use-after-free in the Graphics: Canvas2D component

Published Modified CWE 416
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Red Hat6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Ubuntu (medium).

Description

Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

Affected packages and fixed versions

SourcePackageFixed in
chainguardfirefox149.0-r0
rapidfort fedora 43firefox, firefox-langpacks, thunderbird and 1 more149.0.2-1.fc43 and 1 more
rapidfort ubuntu 20.04thunderbirdno fix listed
rapidfort ubuntu 22.04thunderbirdno fix listed
rapidfort ubuntu 24.04thunderbirdno fix listed
ubuntu 22.04thunderbirdno fix listed
wolfifirefox149.0-r0
Show all 10 entries from 7 sources
SourcePackageFixed in
chainguardfirefox149.0-r0
rapidfort fedora 43firefox149.0.2-1.fc43
rapidfort fedora 43firefox-langpacks149.0.2-1.fc43
rapidfort fedora 43thunderbird149.0.1-3.fc43
rapidfort fedora 43thunderbird-librnp-rnp149.0.1-3.fc43
rapidfort ubuntu 20.04thunderbirdno fix listed
rapidfort ubuntu 22.04thunderbirdno fix listed
rapidfort ubuntu 24.04thunderbirdno fix listed
ubuntu 22.04thunderbirdno fix listed
wolfifirefox149.0-r0

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.