Withdrawn: this CVE is not a vulnerability
The assigning CNA withdrew CVE-2026-1518 on 24 July 2026, and it carries the Rejected state at CVE.org and NVD. It must not be treated as a live finding. Its pre-withdrawal severity, score and exploitability are withheld below; the record itself is kept because withdrawals are reversible and because the reject reason is the correction worth publishing.
CVE-2026-1518
Keycloak: blind server-side request forgery (ssrf) via ciba backchannel notification endpoint in keycloak
Description
Rejected reason: 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.
INFO
Published Date :
Feb. 2, 2026, 8:16 a.m.
Last Modified :
July 24, 2026, 3:17 p.m.
Remotely Exploit :
—
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | LOW | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | MITRE-CVE |
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CVE-2026-1518 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-1518 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Rejected by [email protected]
Jul. 24, 2026
Action Type Old Value New Value -
CVE Modified by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Changed Description 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. Rejected reason: 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. Removed CVSS V3.1 Red Hat, Inc.: AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N Removed CWE Red Hat, Inc.: CWE-918 Removed Reference Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-1518 Removed Reference Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2433727 Removed Affected [{'cpes': ['cpe:/a:redhat:build_keycloak:'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Keycloak', 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Keycloak', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Keycloak', 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:build_keycloak:'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Keycloak', 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Keycloak', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Keycloak', 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-1518', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-02-02T14:03:51.798430Z'} -
New CVE Received by [email protected]
Feb. 02, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-918 Added Reference https://access.redhat.com/security/cve/CVE-2026-1518 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2433727