CVE-2026-33193
Docmost vulnerable to stored XSS via MIME type spoofing
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.
INFO
Published Date :
April 14, 2026, 10:16 p.m.
Last Modified :
July 24, 2026, 11:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Docmost to version 0.70.0.
- Apply security patches when available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-33193.
| URL | Resource |
|---|---|
| https://github.com/docmost/docmost/security/advisories/GHSA-7cq4-577p-wp6p | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-33193 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-33193
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-33193 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-33193 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Changed Translation Title: Docmost, Description: Docmost es un software de wiki y documentación colaborativo de código abierto. Las versiones anteriores a la 0.70.0 son vulnerables a un ataque de cross-site scripting (XSS) almacenado debido a un manejo inadecuado de la suplantación de tipo MIME (GHSL-2026-052). Un atacante podría explotar esta falla para inyectar scripts maliciosos, comprometiendo potencialmente la seguridad de los usuarios y los datos. La versión 0.70.0 contiene un parche. Title: Docmost, Description: Docmost es un software de wiki y documentación colaborativo de código abierto. Las versiones anteriores a la 0.70.0 son vulnerables a un ataque de cross-site scripting (XSS) almacenado debido a un manejo inadecuado de la suplantación de tipo MIME (GHSL-2026-052). Un atacante podría explotar esta falla para inyectar scripts maliciosos, comprometiendo potencialmente la seguridad de los usuarios y los datos. La versión 0.70.0 contiene un parche. -
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: Docmost, Description: Docmost es un software de wiki y documentación colaborativo de código abierto. Las versiones anteriores a la 0.70.0 son vulnerables a un ataque de cross-site scripting (XSS) almacenado debido a un manejo inadecuado de la suplantación de tipo MIME (GHSL-2026-052). Un atacante podría explotar esta falla para inyectar scripts maliciosos, comprometiendo potencialmente la seguridad de los usuarios y los datos. La versión 0.70.0 contiene un parche. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'docmost', 'product': 'docmost', 'versions': [{'status': 'affected', 'version': '< 0.70.0'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-33193', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-16T13:51:25.793213Z'} -
Initial Analysis by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:docmost:docmost:*:*:*:*:*:*:*:* versions up to (excluding) 0.70.0 Added Reference Type GitHub, Inc.: https://github.com/docmost/docmost/security/advisories/GHSA-7cq4-577p-wp6p Types: Vendor Advisory -
New CVE Received by [email protected]
Apr. 14, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://github.com/docmost/docmost/security/advisories/GHSA-7cq4-577p-wp6p