CVE-2026-8953

9.6 CRITICAL

Sandbox escape due to use-after-free in the Disability Access APIs component

Published: 2026-05-19 · Last updated: 2026-05-19

Severity and scoring

CVSS: 9.6 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE: CWE-416

Affected products

Vendor	Product
mozilla	firefox, thunderbird

Description

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-8953
[Other]https://bugzilla.mozilla.org/show_bug.cgi?id=2029511
[Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-46/
[Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-47/
[Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-48/
[Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-50/
[Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-51/

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CVE-2026-12023 — Use after free in GPU in Google Chrome on Mac prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process ... (8.3 HIGH)
CVE-2026-12020 — Use after free in Autofill in Google Chrome on Mac prior to 149.0.7827.115 allowed a remote attacker to potentially exploit heap corrupti... (8.8 HIGH)