Vulnerability · Published Jan 5, 2026 · Assigned by GitHub_M

CVE-2025-64422Rate-limit bypass on login via X-Forwarded-Host header

Medium 5.5

In plain English

A medium-severity resource allocation without limits in coolify from coollabsio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 4.0)5.5Medium

Exploit odds (30 days)0.3%top 76.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. In Coolify vstarting with version 4.0.0-beta.434, the /login endpoint advertises a rate limit of 5 requests but can be trivially bypassed by rotating the X-Forwarded-For header. This enables unlimited credential stuffing and brute-force attempts against user and admin accounts. As of time of publication, it is unclear if a patch is available.

Affected products (as reported)

Vendor	Product	Versions
coollabsio	coolify	>= 4.0.0-beta.434

Weakness: CWE-770 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

References

https://github.com/coollabsio/coolify/security/advisories/GHSA-688j-rm43-5r8x x_refsource_CONFIRM