Vulnerability · Published Oct 29, 2026 · Assigned by GitHub_M

CVE-2026-61645Docat has Arbitrary File Upload exists in Upload API

Critical 9.1

In plain English

A critical-severity unrestricted file upload in docat from docat-org. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.4%top 64.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
docat-org	docat	< 1.6.0

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L

References

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