What is CVE-2026-34212?

CVE-2026-34212 is a medium-severity vulnerability in Docmost, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-14.

How severe is CVE-2026-34212?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Docmost

CVE-2026-34212

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 insi…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Docmost — versions < 0.71.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/docmost/docmost/security/advisories/GHSA-cf68-cff9-hq4w (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-34212?: CVE-2026-34212 is a medium-severity vulnerability in Docmost, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-14.
How severe is CVE-2026-34212?: Medium severity. CVSS v3 base score is 5.4 out of 10.