CVE-2026-61645

CRITICAL 9.1

Docat has Arbitrary File Upload exists in Upload API

CVSS Score

9.1

EPSS Score

0.4%

EPSS Percentile

35th

Docat is a tool for hosting versioned static documentation. In the affected implementation, an arbitrary file upload vulnerability in the `Upload API` arises because the API does not validate the `uploaded file path or type`. An attacker can overwrite sensitive configuration files or place malicious files on the Docat web server. Depending on deployment context, uploaded content can enable remote code execution or cross-site scripting intended to steal cookies or redirect users to malicious websites. Version 1.6.0 mitigates filename-based path traversal; remediation of unrestricted file types or deployment-dependent malicious-content effects is not established by the verified patch.

CWE	CWE-434
Vendor	docat-org
Product	docat
Published	Oct 29, 2026
Last Updated	Oct 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

Low

Affected Versions

docat-org / docat

< 1.6.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/docat-org/docat/security/advisories/GHSA-jcxj-j5qf-8crw github.com: https://github.com/docat-org/docat/commit/85fc40e8348c6328f488395d03c779517a0913fd github.com: https://github.com/docat-org/docat/releases/tag/1.6.0