CVE-2026-42451mediumCWE-79CWE-80

CVE-2026-42451: fallo de gravedad media en grimmory-tools grimmory

Grimmory: Stored XSS via Malicious EPUB Enables Session Token Theft

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear grimmory

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.3epss 0.1%
Grimmory is a self-hosted digital library. Prior to version 2.3.1, a stored cross-site scripting (XSS) vulnerability in Grimmory's browser-based EPUB reader allows an attacker to embed arbitrary JavaScript in a crafted EPUB file. When a victim opens the book, the script executes in their browser with full access to the Grimmory application's session context. This can enable session token theft and account takeover, including administrative access if an administrator opens the affected book. This issue has been patched in version 2.3.1.
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L
Productos afectados
grimmory-tools · grimmory
CVEs relacionadas — grimmory-tools grimmory

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-93955MEDIUMgrimmory-tools grimmory Download Endpoint KoboController.java streamFileToResponse authorizationEPSS 0.4%CVE-2026-93954MEDIUMgrimmory-tools grimmory Settings API Endpoint AppSettingController.java AppSettingController.getAppSettings authorizationEPSS 0.4%