Withdrawn or rejected on
Its source no longer considers this a valid vulnerability. It stays here so links keep working, and it is left out of feeds.
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- —
- no EPSS score yet
- public exploits
- 0
- none known
Summary
DO NOT USE THIS CANDIDATE NUMBER. After further review by the Keycloak project and Red Hat, the reported SSRF via client registration/backchannel notification URIs was determined not to constitute a security vulnerability. The reported behavior is expected administrator-controlled functionality, and Keycloak provides documented mitigations through Client Policies, including the Secure Client URIs Pattern executor. Therefore, this CVE has been rejected.
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What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-1518 updated cvss 2.7
keycloak: Blind Server-Side Request Forgery (SSRF) via CIBA Backchannel Notification Endpoint in Keycloak
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Red Hat Build of Keycloak rhbk/keycloak-rhel9-operator, rhbk/keycloak-operator-bundleaffected: workaround, no fix available “Fix deferred”
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Red Hat Build of Keycloak rhbk/keycloak-rhel9not affected: vulnerable code cannot be controlled by adversary
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Sources
- CVE List CVE-2026-1518
- NVD CVE-2026-1518
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