SSRF in Zitadel
CVE-2025-67494
ZITADEL is an open-source identity infrastructure tool. Versions 4.7.0 and below are vulnerable to an unauthenticated, full-read SSRF vulnerability. The ZITADEL Login UI (V2) treats the x-zitadel-forward-host header as a trusted fallback for all deployments, including self-hosted instances. This allows an unauthenticated attacker to force the server to make HTTP requests to arbitrary domains, such as internal addresses, and read the responses, enabling data exfiltration and bypassing network-segmentation controls. This issue is fixed in version 4.7.1.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.005 (38.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N.
Affected products
- Zitadel — versions < 1.80.0-v2.20.0.20251208091519-4c879b47334e, >= 1.83.4, <= 1.87.5, >= 4.0.0-rc.1, < 4.7.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-67494?
- CVE-2025-67494 is a critical-severity vulnerability in Zitadel, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.3/10. Published 2025-12-09.
- How severe is CVE-2025-67494?
- Critical severity. CVSS v3 base score is 9.3 out of 10.
- Is CVE-2025-67494 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.