CVE-2026-34212

CVE-2026-34212 Docmost accepted a javascript: URL inside an attachment node, preserved it through storage and rendering, and turned it back into a clickable anchor in the Docmost origin. Intro I identified, responsibly disclosed, and reproduced a High-severity stored XSS issue in Docmost , the...

Exploit for Cross-site Scripting in Docmost

CVE-2026-34212 Docmost accepted a javascript: URL inside an at...

📄 Docmost Cross Site Scripting

Docmost versions prior to 0.71.0 suffer from a persistent cross site scripting vulnerability. CVE-2026-34212 Docmost accepted a javascript: URL inside an attachment node, preserved it through storage and rendering, and turned it back into a clickable anchor in the Docmost origin. Intro I...

CVE-2026-34212: Improper Neutralization of Input During Web Page Generation

Docmost is open-source collaborative wiki and documentation software. In versions prior to 0.71.0, improper neutralization of attachment URLs in Docmost allows a low-privileged authenticated user to store a malicious javascript: URL inside an attachment node in page content. When another user vie...