Is CVE-2026-33193 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-33193 being exploited in the wild.

How severe is CVE-2026-33193?

Medium severity, with a CVSS score of 4.6, published 14 April 2026.

Is there a fix for CVE-2026-33193?

A patch was published on 2026-04-14: Version 0.70.0 released with a fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-33193 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-33193?

Check whether you run Docmost at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-33193: Docmost stored XSS via MIME type spoofing

CVE-2026-33193 · Severity: medium · CVSS 4.6 · Published 2026-04-14

Docmost is an open-source platform used for collaborative documentation and wikis. A security flaw allows users with low-level access to upload files that trick the system into executing malicious scripts in the browsers of other users. This could lead to unauthorized access to user accounts, theft of sensitive session data, or the defacement of documentation pages.

Technologies: Docmost. Vendors: Docmost.

Quick answers

Is CVE-2026-33193 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-33193 being exploited in the wild.
How severe is CVE-2026-33193?: Medium severity, with a CVSS score of 4.6, published 14 April 2026.
Which products and versions are affected?: Docmost < 0.70.0.
Is there a fix for CVE-2026-33193?: A patch was published on 2026-04-14: Version 0.70.0 released with a fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-33193 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-33193?: Check whether you run Docmost at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stored cross-site scripting (XSS) vulnerability exists in Docmost versions prior to 0.70.0. The root cause is improper validation and handling of MIME types during file uploads, allowing for MIME type spoofing. An authenticated attacker with low privileges can upload a malicious file that, when viewed by another user (such as an administrator), executes arbitrary JavaScript in their browser. This occurs because the application fails to properly neutralize input during web page generation (CWE-79). The vulnerability is fixed in version 0.70.0.

Affected products

Docmost Docmost < 0.70.0

Timeline

2026-04-14: advisory: GitHub Security Advisory published
2026-04-14: disclosed
2026-04-14: patched: Version 0.70.0 released with a fix

References

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

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