CVE-2026-33193

Docmost vulnerable to stored XSS via MIME type spoofing

State: Published
Severity: 4.6 Medium
Published: Apr 14, 2026
Updated: Apr 16, 2026
Reserved: Mar 17, 2026

Description

Docmost is open-source collaborative wiki and documentation software. Versions prior to 0.70.0 are vulnerable to a stored cross-site scripting (XSS) attack due to improper handling of MIME type spoofing (GHSL-2026-052). An attacker could exploit this flaw to inject malicious scripts, potentially compromising the security of users and data. Version 0.70.0 contains a patch.

Scores

CVSS	Score	Vector	Source
3.1	4.6 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N	GitHub_M

Weaknesses

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

Affected Products

Product	Versions
docmostdocmost	< 0.70.0Affected

References

https://github.com/docmost/docmost/security/advisories/GHSA-7cq4-577p-wp6p

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