Security advisory

{
  "id": "43e21496487ff4862d533d3c4e52f5e27f3d047009f01b5eca776148e55688cf",
  "url": "https://osv.dev/vulnerability/CVE-2026-23768",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-23768",
    "summary": "lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension.",
    "evidence": "osv:CVE-2026-23768",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-23768",
      "aliases": [
        "CVE-2026-23768"
      ],
      "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/naver/lucy-xss-filter",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7c1de6d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7c1de6d"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23768.json"
          }
        }
      ],
      "modified": "2026-10-20T12:05:55.024947597Z",
      "provider": "osv",
      "references": [
        "https://cve.naver.com/detail/cve-2026-23768.html",
        "https://github.com/naver/lucy-xss-filter/pull/31"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:naver:lucy-xss-filter:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "naver:lucy-xss-filter",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "2025-06-08"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23768",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387250,
  "published_at": "2026-01-16T06:15:51.333+00:00"
}