CVE-2026-29067: ZITADEL Vulnerable to Account Takeover Due to Improper Instance Validation in V2 Login

December 8, 2025 (updated March 9, 2026)

A potential vulnerability exists in ZITADEL’s password reset mechanism in login V2. ZITADEL utilizes the Forwarded or X-Forwarded-Host header from incoming requests to construct the URL for the password reset confirmation link. This link, containing a secret code, is then emailed to the user.

References

github.com/advisories/GHSA-pfrf-9r5f-73f5
github.com/zitadel/zitadel
github.com/zitadel/zitadel/commit/4c879b47334e01d4fcab921ac1b44eda39acdb96
github.com/zitadel/zitadel/security/advisories/GHSA-pfrf-9r5f-73f5
nvd.nist.gov/vuln/detail/CVE-2026-29067

Code Behaviors & Features

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