CVE-2026-105214NVD

Vulnerability Summary

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.

Severity Level

LOW(2.3)

Published Date

Oct 4, 2026

Last Modified

Oct 5, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.22%Probability

Root Weakness (CWE)

CWE-918: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 2.3 (LOW)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsPresent

Privileges RequiredLow

User InteractionNone

Confidentiality (Vulnerable System)Low

Integrity (Vulnerable System)Low

Availability (Vulnerable System)None

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions

zitadel zitadel < 4.16.2

Patched Versions

zitadel zitadel 4.16.2

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