Vulnerability · Published Jul 6, 2026 · Assigned by GitHub_M

CVE-2026-41899Coolify unauthenticated feedback endpoint allows Discord webhook abuse

Medium 6.5

In plain English

A medium-severity missing authentication in coolify from coollabsio. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 69.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.474, POST /api/feedback has no authentication, no rate limiting, and no input validation, allowing arbitrary content to be forwarded directly to a Discord webhook and enabling spam, content injection, and webhook abuse. This issue is fixed in version 4.0.0-beta.474.

Affected products (as reported)

Vendor	Product	Versions
coollabsio	coolify	< 4.0.0-beta.474

Weakness: CWE-306, CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

References

https://github.com/coollabsio/coolify/security/advisories/GHSA-v64c-v633-58xp x_refsource_CONFIRM
https://github.com/coollabsio/coolify/pull/9653 x_refsource_MISC
https://github.com/coollabsio/coolify/commit/371e883c75a87d82c398bf89ee8ad6387348520d x_refsource_MISC