CVE-2026-40927 PUBLISHED

Docmost: XSS in Comments with JavaScript URI

Assigner: GitHub_M
Reserved: 15.04.2026 Published: 21.04.2026 Updated: 21.04.2026

Docmost is open-source collaborative wiki and documentation software. Prior to 0.80.0, when leaving a comment on a page, it is possible to include a JavaScript URI as the link. When a user clicks on the link the JavaScript executes. This vulnerability is fixed in 0.80.0.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS Score: 5.4

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	Low
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	docmost
Product	docmost
Versions	Version < 0.80.0 is affected

References

https://github.com/docmost/docmost/security/advisories/GHSA-4gv6-jw3v-wc34

Problem Types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE