CVE-2026-55671

unknowncovered by 1 sourcefirst seen 2026-07-10

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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Advisory coverage (1)

unknownCVE-2026-55671: ZITADEL is an open source identity management platform. From 4.0.0-rc.1 through 4.15.1, ZITADE…nvd · 2026-07-10

External references

NVD record for CVE-2026-55671

CVE.org record

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