CVE-2026-33193
Received Received - Intake
Stored XSS in Docmost Wiki via MIME Type Spoofing

Publication date: 2026-04-14

Last updated on: 2026-04-23

Assigner: GitHub, Inc.

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.
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Meta Information
Published
2026-04-14
Last Modified
2026-04-23
Generated
2026-06-16
AI Q&A
2026-04-15
EPSS Evaluated
2026-06-15
NVD
CVE-2026-33193
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
docmost docmost to 0.70.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability affects Docmost, an open-source collaborative wiki and documentation software. Versions prior to 0.70.0 are vulnerable to a stored cross-site scripting (XSS) attack caused by improper handling of MIME type spoofing. This flaw allows an attacker to inject malicious scripts into the application.

Impact Analysis

Exploitation of this vulnerability could lead to malicious scripts being executed in the context of users interacting with the Docmost software. This can compromise the security of users and data by potentially allowing attackers to steal information, hijack user sessions, or perform unauthorized actions.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade Docmost to version 0.70.0 or later, as this version contains the patch that fixes the stored cross-site scripting (XSS) issue caused by improper handling of MIME type spoofing.

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0/70
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