CVE-2025-64103: Zitadel May Bypass Second Authentication Factor

October 29, 2025 (updated November 5, 2025)

A vulnerability in Zitadel’s token verification prematurely marked sessions as authenticated when only one factor was verified.

References

github.com/advisories/GHSA-cfjq-28r2-4jv5
github.com/zitadel/zitadel
github.com/zitadel/zitadel/commit/b284f8474eed0cba531905101619e7ae7963156b
github.com/zitadel/zitadel/security/advisories/GHSA-cfjq-28r2-4jv5
nvd.nist.gov/vuln/detail/CVE-2025-64103
pkg.go.dev/vuln/GO-2025-4083

Code Behaviors & Features

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