CVE-2025-5263

medium

Description

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

References

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

Details

Source: Mitre, NVD

Published: 2025-05-27

Updated: 2025-05-28

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N