GHSA-FM6W-RRP3-2X4W

Vulnerability from github – Published: 2026-02-09 21:31 – Updated: 2026-02-13 22:41
VLAI
Summary
Keycloak Affected by Broken Access Control Vulnerability in the UserManagedPermissionService
Details

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService (UMA Protection API). When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first resource in the policy's list. This allows a user (Owner A) who owns one resource (RA) to update a shared policy and modify authorization rules for other resources (e.g., RB) in that same policy, even if those other resources are owned by a different user (Owner B). This constitutes a horizontal privilege escalation.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-services"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.2.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-services"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "26.5.0"
            },
            {
              "fixed": "26.5.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-services"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "26.3.0"
            },
            {
              "fixed": "26.4.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-14778"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-266"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-10T16:53:14Z",
    "nvd_published_at": "2026-02-09T20:15:54Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService (UMA Protection API). When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller\u0027s ownership against the first resource in the policy\u0027s list. This allows a user (Owner A) who owns one resource (RA) to update a shared policy and modify authorization rules for other resources (e.g., RB) in that same policy, even if those other resources are owned by a different user (Owner B). This constitutes a horizontal privilege escalation.",
  "id": "GHSA-fm6w-rrp3-2x4w",
  "modified": "2026-02-13T22:41:34Z",
  "published": "2026-02-09T21:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-14778"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/issues/46147"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/pull/46154"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:2363"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:2364"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:2365"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:2366"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2025-14778"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422600"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak Affected by Broken Access Control Vulnerability in the UserManagedPermissionService"
}



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