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CVE-2025-14331

Published: Dec 9, 2025

Modified: Apr 13, 2026

PUBLISHED

Description

Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

Vendor	Product	Versions
Mozilla	Firefox	unaffected `115.31 - <= 115.` unaffected `140.6 - <= 140.` unaffected `146 - <= *`
Mozilla	Thunderbird	unaffected `140.6 - <= 140.` unaffected `146 - <= `

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2000218

https://www.mozilla.org/security/advisories/mfsa2025-92/

https://www.mozilla.org/security/advisories/mfsa2025-93/

https://www.mozilla.org/security/advisories/mfsa2025-94/

https://www.mozilla.org/security/advisories/mfsa2025-95/

https://www.mozilla.org/security/advisories/mfsa2025-96/

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