CVE-2025-5266

Script element events leaked cross-origin resource status

CVSS 4.3 MEDIUMEPSS 0.3%CWE-200

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 4.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

27 mai 2025Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

Referências

https://bugzilla.mozilla.org/show_bug.cgi?id=1965628 https://lists.debian.org/debian-lts-announce/2025/05/msg00043.html https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html https://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/