Security advisory

{
  "id": "cbb8277f3382d2df1c1014f511316f608a21edb8edf23c7dae8f9f1f76ae6965",
  "url": "https://osv.dev/vulnerability/CVE-2020-10959",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-10959",
    "summary": "resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.",
    "evidence": "osv:CVE-2020-10959",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-10959",
      "aliases": [
        "BIT-mediawiki-2020-10959",
        "CVE-2020-10959",
        "GHSA-mqhw-wq8p-vf5r"
      ],
      "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/wikimedia/mediawiki",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2303b05125b2cc046a20d614786174ea803143eb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.35"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.35.0-rc.1",
            "1.35.0-rc.0",
            "test-hashar-for-ci",
            "1.6.0",
            "1.5.0beta4",
            "1.5.0beta3",
            "1.5.0beta2",
            "1.5.0beta1",
            "1.5.0alpha2",
            "1.5.0alpha1",
            "1.3.0beta1",
            "1.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10959.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:21.166289363Z",
      "provider": "osv",
      "references": [
        "https://gerrit.wikimedia.org/r/c/mediawiki/core/+/536725",
        "https://phabricator.wikimedia.org/T232932",
        "https://phabricator.wikimedia.org/T240393"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-10959",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430432,
  "published_at": "2020-06-02T14:15:10.507+00:00"
}