High 7.3Published Jul 10, 2026

CVE-2026-56667ZITADEL: Stored XSS via Default URI Redirect in Login V2

Updated under an hour ago (Oct 30, 2026, 1:20 AM ET)

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No exploitation reported and no EPSS estimate yet.

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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: 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

zitadel zitadel zitadel:zitadel (from the name)	before 4.15.3	CNA record

References

References

https://github.com/zitadel/zitadel/security/advisories/GHSA-5wcj-9wj4-j65h	x-refsource-confirm
https://github.com/zitadel/zitadel/commit/038265925a3b05ac1df8aad461ab071983e9eb85	x-refsource-misc
https://github.com/zitadel/zitadel/releases/tag/v4.15.3	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.