CVE-2026-55671
ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Components
CVSS Score
0.0
EPSS Score
0.3%
EPSS Percentile
16th
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.
| CWE | CWE-918 |
| Vendor | zitadel |
| Product | zitadel |
| Published | Jul 10, 2026 |
| Last Updated | Jul 14, 2026 |
Stay Ahead of the Next One
Get instant alerts for zitadel zitadel
Be the first to know when new unknown vulnerabilities affecting zitadel zitadel are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
zitadel / zitadel
< 4.15.2