What is CVE-2026-34198?

CVE-2026-34198 is a medium-severity vulnerability in Coollabsio Coolify, classified under Origin Validation Error. CVSS score: 5.3/10. Published 2026-07-07.

How severe is CVE-2026-34198?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Coollabsio Coolify

CVE-2026-34198

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 T…

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Coollabsio Coolify — versions < 4.0.0-beta.471

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34198?: CVE-2026-34198 is a medium-severity vulnerability in Coollabsio Coolify, classified under Origin Validation Error. CVSS score: 5.3/10. Published 2026-07-07.
How severe is CVE-2026-34198?: Medium severity. CVSS v3 base score is 5.3 out of 10.