Script element events leaked cross-origin resource status
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.3epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1965628https://lists.debian.org/debian-lts-announce/2025/05/msg00043.htmlhttps://lists.debian.org/debian-lts-announce/2025/05/msg00046.htmlhttps://www.mozilla.org/security/advisories/mfsa2025-42/https://www.mozilla.org/security/advisories/mfsa2025-44/https://www.mozilla.org/security/advisories/mfsa2025-45/https://www.mozilla.org/security/advisories/mfsa2025-46/