CVE-2025-13019

Same-origin policy bypass in the DOM: Workers component

CVSS 8.1 HIGHEPSS 0.2%CWE-942

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

11 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Same-origin policy bypass in the DOM: Workers component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

Mozilla · Firefox Mozilla · Thunderbird

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1988412 https://www.mozilla.org/security/advisories/mfsa2025-87/https://www.mozilla.org/security/advisories/mfsa2025-88/https://www.mozilla.org/security/advisories/mfsa2025-90/https://www.mozilla.org/security/advisories/mfsa2025-91/