Security advisory

{
  "id": "56c77c5bdc397ef51aa074f14e0ca54805e57defc3b1b643799cf64c70661298",
  "url": "https://osv.dev/vulnerability/CVE-2020-10748",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-10748",
    "summary": "A flaw was found in Keycloak's data filter, in version 10.0.1, where it allowed the processing of data URLs in some circumstances. This flaw allows an attacker to conduct cross-site scripting or further attacks.",
    "evidence": "osv:CVE-2020-10748",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-10748",
      "aliases": [
        "CVE-2020-10748",
        "GHSA-hgpg-593r-hhvp"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/keycloak/keycloak",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9972f24dd2458ab200626cfa0e067fb774d772d1"
                },
                {
                  "last_affected": "9972f24dd2458ab200626cfa0e067fb774d772d1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redhat:keycloak:10.0.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "10.0.1"
                      },
                      {
                        "last_affected": "10.0.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "10.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10748.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:47.473318936Z",
      "provider": "osv",
      "references": [
        "https://bugzilla.redhat.com/show_bug.cgi?id=1836786"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:redhat:single_sign-on:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:single_sign-on",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "7.4.1"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-10748",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436556,
  "published_at": "2020-09-16T18:15:12.547+00:00"
}