CVE-2026-105214

Low

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.

SeverityLow

CVSS2.3

Exploit probability—

ProductZitadel

PublishedOct 4, 2026

First seenOct 4, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

zitadel zitadel4.16.2 or later

Vendor advisories

github.com/zitadel/zitadel/security/advisories/GHSA-93hm-8q29-c8cr

Affected products

Product	Affected versions	Fixed in
zitadel zitadel	v < 4.16.2	4.16.2

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