What’s Vulnerable › Vulnerabilities

CVE-2026-34198: Coolify: Password reset link poisoning via X-Forwarded-Host header spoofing

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-07 · updated 2026-10-25
• Weakness: CWE-346

Description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.471, the TrustProxies middleware trusts all proxies ($proxies = '*'), accepting X-Forwarded-Host from any source. The TrustHosts middleware, intended to prevent host header attacks, has a circular caching dependency that prevents it from ever validating hosts. When a password reset is requested, the ResetPassword notification generates the reset URL using url(route(..., false)), which derives the host from the (spoofable) request. An unauthenticated attacker can trigger a password reset email containing a link pointing to an attacker-controlled domain, enabling token theft and account takeover. This issue is fixed in version 4.0.0-beta.471.

Affected products

• coollabsio coolify: before 4.0.0-beta.471

References

• https://github.com/coollabsio/coolify/commit/98569e4edbfc316877c9e0d27ea89fab3c49e3bd
• https://github.com/coollabsio/coolify/pull/9193
• https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.471
• https://github.com/coollabsio/coolify/security/advisories/GHSA-cgj8-7m5q-x5gv
• https://github.com/coollabsio/coolify/security/advisories/GHSA-cgj8-7m5q-x5gv

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