Semantic MediaWiki has reflected XSS in Special:Ask plain table headers

{
  "id": "c290eeead54cc3ecac1f95740ff2976a127a0972980334e68d0ba9193e9dcd4c",
  "url": "https://osv.dev/vulnerability/CVE-2026-77606",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Semantic MediaWiki has reflected XSS in Special:Ask plain table headers",
    "summary": "Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, when `headers=plain`, table header text was emitted into `` via a raw HTML path. User-controlled `mainlabel` content could therefore become executable HTML. Version 7.2.0 fixes the issue.",
    "evidence": "osv:CVE-2026-77606",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-77606",
      "aliases": [
        "CVE-2026-77606",
        "GHSA-3jp5-3h47-28qf"
      ],
      "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/semanticmediawiki/semanticmediawiki",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0d11c070bbe64f4425e3ab8be89eefa926dd9e4e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.2.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0d11c070bbe64f4425e3ab8be89eefa926dd9e4e"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "7.2.0"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.2.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "7.1.0",
            "7.0.0",
            "6.0.1",
            "6.0.0",
            "5.1.0",
            "5.0.2",
            "5.0.1",
            "5.0.0",
            "4.2.0",
            "4.1.3",
            "4.1.2",
            "4.1.1",
            "4.1.0",
            "4.0.2",
            "4.0.1",
            "4.0.0",
            "3.2.0",
            "3.2.0-rc.1",
            "3.2.0-rc.2",
            "3.1.0",
            "3.1.0-rc.1",
            "3.0.0",
            "3.0.0-rc.2",
            "3.0.0-rc.1",
            "2.5.0",
            "2.5.0-rc.1",
            "2.4.0",
            "2.4.0-RC1",
            "2.3.0",
            "2.3.0-RC1",
            "2.1.0-RC1",
            "2.0-RC3",
            "2.0-RC2",
            "2.0-RC1",
            "1.9.2",
            "1.9.1.1",
            "1.9.1",
            "1.9.0.2",
            "1.9.0.1",
            "1.9",
            "1.9-RC1",
            "1.9beta1",
            "1.8beta2",
            "1.8beta1",
            "1.7.1",
            "1.7.0.2",
            "1.7.0.1",
            "1.7",
            "1.6.1",
            "1.6",
            "1.5.6",
            "1.5.5",
            "1.5.4",
            "1.5.3",
            "1.5.2",
            "1.5.1",
            "1.5",
            "1.4.3",
            "1.4.2",
            "1.4.1",
            "1.4",
            "1.3",
            "1.2.2",
            "1.2.1",
            "1.2",
            "1.1.2",
            "1.1.1",
            "1.1",
            "1.0.1",
            "1.0",
            "0.7",
            "0.6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77606.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.277514824Z",
      "provider": "osv",
      "references": [
        "https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77606.json",
        "https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-3jp5-3h47-28qf",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-77606"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77606.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-77606",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489650,
  "published_at": "2026-09-18T16:41:42.731+00:00"
}