What’s Vulnerable › Vulnerabilities

CVE-2026-105214: Zitadel before 4.16.2 SSRF via Organization Domain HTTP Verification

• Severity: low (CVSS 2.3 v4.0)
• 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: 2026-10-04 · updated 2026-10-05
• Weakness: CWE-918

Description

Zitadel before 4.16.2 contains a server-side request forgery vulnerability that allows attackers to make the server request internal resources through organization domain HTTP verification. The challenge fetch uses Go's default http.Get instead of the protected client, so attackers can register domains that redirect to loopback, internal, or cloud metadata addresses to scan ports and map internal networks.

Affected products

• zitadel: before 4.16.2 — fixed in 4.16.2

How to fix

Upgrade to a fixed version: zitadel 4.16.2. Check the vendor advisory for mitigations.

References

• https://github.com/zitadel/zitadel/security/advisories/GHSA-93hm-8q29-c8cr
• https://www.vulncheck.com/advisories/zitadel-before-4.16.2-ssrf-via-organization-domain-http-verification

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