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CVE-2026-55671

LOW
2.3
CVSS 4.0
Description
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.

Metadata

CVE ID
CVE-2026-55671
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-17 00:05 UTC
Published
2026-07-10 17:17 UTC
Last updated
2026-07-10 17:17 UTC
Primary CWE
CWE-918
CWE-918: Server-Side Request Forgery (SSRF)
Vendor / Product
zitadel / zitadel
Sources
cve.org  ·  NVD

Severity & Metrics

2.3 LOW CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products (1)
VendorProductPlatformVersions
zitadel zitadel — < 4.15.2
Weakness (CWE)
CWESourceDescription
CWE-918 cna CWE-918: Server-Side Request Forgery (SSRF)
CVSS scores (1)
ScoreSeverityVersionSourceVector
2.3 LOW 4.0 cna CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
References (3)
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