CVE-2026-34212: Docmost

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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 views the page and activates the attachment link/icon, attacker-controlled JavaScript executes in the context of the Docmost origin. Version 0.71.0 patches the issue.

Affected products

• Docmost Docmost: before 0.71.0 (fixed in 0.71.0)

Published 2026-04-14. Last modified 2026-07-24.