Security Advisory

CVE-2026-55671

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-10 17:17:50

Last updated 2026-07-14 02:04:22

Assigner GitHub_M

CVSS score 2.3

State PUBLISHED

Description

ZITADEL is an open source identity management platform. From 4.0.0-rc.1 through 4.15.1, ZITADEL's HTTP notification channels, OIDC BackChannel Logout, and SAML metadata URL fetches do not consistently validate user-defined URLs against protected denylist handling, allowing server-side requests to loopback, internal IP, link-local, or redirected endpoints through DNS rebinding, redirects, or protocol downgrades. This issue is fixed in version 4.15.2.

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