CVE-2026-12294

N/A Unknown
Published: June 16, 2026 Modified: June 16, 2026
View on NVD

Description

Sandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=2039873
Source: security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-57/
Source: security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-58/
Source: security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-59/
Source: security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-60/
Source: security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-61/
Source: security@mozilla.org

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
0.2%
5th percentile
Exploitation Status
Not in CISA KEV