BookStack before 26.05.4 Stored XSS via Drawing Upload
28Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 9.3epss 0.3%
probabilidade de exploração
0.3%top 83% das CVEs
exploração observada
nãonenhuma fonte 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
Produtos afetados
bookstackapp · bookstackReferências
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