A flaw was found in Keycloak’s CIBA feature where insufficient validation of client-configured backchannel notification endpoints could allow blind server-side requests to internal services.
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Score 2.7 from GitHub Security Advisory (severity: LOW) published 2026-02-02. NVD baseline CVSS 2.7; sources differ by 0.0.
A flaw was found in Keycloak’s CIBA feature where insufficient validation of client-configured backchannel notification endpoints could allow blind server-side requests to internal services.
February 2, 2026
April 15, 2026
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| maven | org.keycloak:keycloak-parent | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.keycloak:keycloak-parent | 1.0-alpha-1 ... 9.0.3 (219 versions) | — | — |
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maven:org.keycloak:keycloak-parent
CWE-918