CVE-2026-56667
highpriority · track · 0EPSS 0.004 · 32 %ileEUEPSS · scored 2026-10-27
ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL Login V2 OIDC and SAML FailedPrecondition error paths return loginSettings.defaultRedirectUri to router.push without applying the isSafeRedirectUri check, allowing an organization or instance administrator to store a javascript or data URI that can execute in a user's browser when an affected login error path is reached. This issue is fixed in version 4.15.3.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.7–7.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://github.com/zitadel/zitadel/commit/038265925a3b05ac1df8aad461ab071983e9eb85cnnvd
- https://github.com/zitadel/zitadel/releases/tag/v4.15.3cnnvd
- https://github.com/zitadel/zitadel/security/advisories/GHSA-5wcj-9wj4-j65hcnnvd
- https://github.com/zitadel/zitadel/commit/038265925a3b05ac1df8aad461ab071983e9eb85enisa_euvd
- https://github.com/zitadel/zitadel/releases/tag/v4.15.3enisa_euvd
- https://github.com/zitadel/zitadel/security/advisories/GHSA-5wcj-9wj4-j65henisa_euvd
- https://github.com/zitadel/zitadel/commit/038265925a3b05ac1df8aad461ab071983e9eb85nvd
- https://github.com/zitadel/zitadel/releases/tag/v4.15.3nvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan