Vulnerability-Lookup

CVE-2026-1518 (GCVE-0-2026-1518)

Vulnerability from cvelistv5 – Published: 2026-02-02 07:17 – Updated: 2026-07-24 14:07

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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{
  "containers": {
    "cna": {
      "providerMetadata": {
        "dateUpdated": "2026-07-24T14:07:33.181Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "rejectedReasons": [
        {
          "lang": "en",
          "value": "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."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-1518",
    "datePublished": "2026-02-02T07:17:46.557Z",
    "dateRejected": "2026-07-24T14:07:33.181Z",
    "dateReserved": "2026-01-28T08:08:15.419Z",
    "dateUpdated": "2026-07-24T14:07:33.181Z",
    "state": "REJECTED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-1518",
      "date": "2026-07-24",
      "epss": "0.00236",
      "percentile": "0.14728"
    },
    "nvd": {
      "cve": {
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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."
          }
        ],
        "id": "CVE-2026-1518",
        "lastModified": "2026-07-24T15:17:13.450",
        "metrics": {},
        "published": "2026-02-02T08:16:06.217",
        "references": [],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Rejected"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-25T19:10:57+00:00",
      "cve": "CVE-2026-1518",
      "id": "CVE-2026-1518",
      "initial_release_date": "2026-01-28T00:00:00+00:00",
      "product_status:known_affected": "2",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "keycloak: Blind Server-Side Request Forgery (SSRF) via CIBA Backchannel Notification Endpoint in Keycloak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1518.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "cna": {
          "providerMetadata": {
            "dateUpdated": "2026-07-24T14:07:33.181Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "rejectedReasons": [
            {
              "lang": "en",
              "value": "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."
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-1518",
        "datePublished": "2026-02-02T07:17:46.557Z",
        "dateRejected": "2026-07-24T14:07:33.181Z",
        "dateReserved": "2026-01-28T08:08:15.419Z",
        "dateUpdated": "2026-07-24T14:07:33.181Z",
        "state": "REJECTED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-1518

Vulnerability from fkie_nvd - Published: 2026-02-02 08:16 - Updated: 2026-07-24 15:17

Severity

Summary

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.

References

	URL	Tags

Impacted products

	Vendor	Product	Version

JSON

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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-1518",
  "lastModified": "2026-07-24T15:17:13.450",
  "metrics": {},
  "published": "2026-02-02T08:16:06.217",
  "references": [],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Rejected"
}

GHSA-FWHW-CHW4-GH37

Vulnerability from github – Published: 2026-02-02 09:30 – Updated: 2026-02-02 21:23

Summary

Keycloak Server-Side Request Forgery (SSRF) vulnerability

Details

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.

Severity

2.7 (Low)


                  
                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-parent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "26.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-1518"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-02T21:23:18Z",
    "nvd_published_at": "2026-02-02T08:16:06Z",
    "severity": "LOW"
  },
  "details": "A flaw was found in Keycloak\u2019s CIBA feature where insufficient validation of client-configured backchannel notification endpoints could allow blind server-side requests to internal services.",
  "id": "GHSA-fwhw-chw4-gh37",
  "modified": "2026-02-02T21:23:18Z",
  "published": "2026-02-02T09:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1518"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-1518"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433727"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak Server-Side Request Forgery (SSRF) vulnerability"
}

WID-SEC-W-2026-0288

Vulnerability from csaf_certbund - Published: 2026-02-02 23:00 - Updated: 2026-02-02 23:00

Summary

Keycloakb (CIBA): Schwachstelle ermöglicht Manipulation von Dateien

Severity

Niedrig

Scope

1 vulnerability in this advisory, including CVE-2026-1518.

CVE-2026-1518

Last affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-1518 (GCVE-0-2026-1518)

FKIE_CVE-2026-1518

GHSA-FWHW-CHW4-GH37

WID-SEC-W-2026-0288

Tags

Sightings

Nomenclature

Related by attack behaviour