CVE-2021-43856: fallo de gravedad alta en Requarks wiki
Stored XSS in non-image uploads in Requarks/wiki
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.2epss 0.9%
Wiki.js is a wiki app built on Node.js. Wiki.js 2.5.263 and earlier is vulnerable to stored cross-site scripting through non-image file uploads for file types that can be viewed directly inline in the browser. By creating a malicious file which can execute inline JS when viewed in the browser (e.g. XML files), a malicious Wiki.js user may stage a stored cross-site scripting attack. This allows the attacker to execute malicious JavaScript when the file is viewed directly by other users. The file must be opened directly by the user and will not trigger directly in a normal Wiki.js page. A patch in version 2.5.264 fixes this vulnerability by adding an optional (enabled by default) force download flag to all non-image file types, preventing the file from being viewed inline in the browser. As a workaround, disable file upload for all non-trusted users. --- Thanks to @Haxatron for reporting this vulnerability. Initially reported via https://huntr.dev/bounties/266bff09-00d9-43ca-a4bb-bb540642811f/
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Productos afectados
Requarks · wikiCVEs relacionadas — Requarks wiki
En el mismo producto, de las más peligrosas a las menos.
CVE-2021-43800HIGHAsset directory traversal with some storage modules on WindowsEPSS 1.8%CVE-2020-15236HIGHDirectory Traversal in Wiki.jsEPSS 1.8%CVE-2021-21383HIGHXSS in Wiki.jsEPSS 1.0%CVE-2021-43855HIGHStored XSS via SVG in Requarks/wikiEPSS 0.9%CVE-2021-43842MEDIUMStored XSS via SVG file upload in Wiki.jsEPSS 0.7%CVE-2022-23654HIGHImproper write access check in Requarks/wikiEPSS 0.7%