Vulnerability · Published Apr 14, 2026 · Assigned by GitHub_M

CVE-2026-33193Docmost vulnerable to stored XSS via MIME type spoofing

Medium 4.6

In plain English

A medium-severity cross-site scripting in docmost from docmost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)4.6Medium

Exploit odds (30 days)0.2%top 91.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
docmost	docmost	< 0.70.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

References

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