CVE-2025-5263

Description

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

References

https://www.mozilla.org/security/advisories/mfsa2025-46/

https://www.mozilla.org/security/advisories/mfsa2025-45/

https://www.mozilla.org/security/advisories/mfsa2025-44/

https://www.mozilla.org/security/advisories/mfsa2025-43/

https://www.mozilla.org/security/advisories/mfsa2025-42/

https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html

https://lists.debian.org/debian-lts-announce/2025/05/msg00043.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1960745

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS