BookStack before 26.05.4 Stored XSS via Drawing Upload
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.3epss 0.3%
probabilidad de explotación
0.3%top 83% de las CVE
explotación observada
noninguna fuente lo reporta
BookStack before 26.05.4 contains a stored cross-site scripting vulnerability in the drawing upload endpoint that accepts unvalidated base64 content and stores it without content inspection. Attackers with editor permissions can upload SVG files containing scripts that execute in administrator browsers when accessed through the image gallery API without content-type validation or CSP headers.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Productos afectados
bookstackapp · bookstackReferencias
https://github.com/BookStackApp/BookStackhttps://github.com/BookStackApp/BookStack/blob/v26.05.3/app/Uploads/ImageService.phphttps://github.com/BookStackApp/BookStack/commit/ac0348a79f3ddd004ca87703948cb9c7d19a420ahttps://github.com/BookStackApp/BookStack/releases/tag/v26.05.4https://www.bookstackapp.com/blog/bookstack-release-v26-05-4/https://www.vulncheck.com/advisories/bookstack-before-26.05.4-stored-xss-via-drawing-upload