Security advisory

{
  "id": "23acd55bc44ec36a4897d955911c661d7310066db4a0e600cc2af756b94a44d3",
  "url": "https://osv.dev/vulnerability/CVE-2021-41801",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-41801",
    "summary": "The ReplaceText extension through 1.41 for MediaWiki has Incorrect Access Control. When a user is blocked after submitting a replace job, the job is still run, even if it may be run at a later time (due to the job queue backlog)",
    "evidence": "osv:CVE-2021-41801",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-41801",
      "aliases": [
        "BIT-mediawiki-2021-41801",
        "CVE-2021-41801"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wikimedia/mediawiki",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8d00acfb43e9bd03ba7711126b03e9e6eaa918d5"
                },
                {
                  "introduced": "9b8a1684d4a81d1e617bfb7c9b39a347fc454b53"
                },
                {
                  "fixed": "4a3d6a63f4656877f454f050355ee565b97f40f4"
                },
                {
                  "introduced": "bc542ec6d8573dfb906b468901799e0017875f1e"
                },
                {
                  "fixed": "f65f9d6971578b301ef9fc915a729e6a13266a5e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.31.16"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.35.0"
                      },
                      {
                        "fixed": "1.35.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.36.0"
                      },
                      {
                        "fixed": "1.36.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.36.1",
            "1.35.3",
            "1.31.15",
            "1.36.0",
            "1.31.14",
            "1.35.2",
            "1.31.13",
            "1.31.12",
            "1.35.1",
            "1.31.11",
            "1.31.8",
            "1.35.0",
            "1.31.10",
            "1.31.9",
            "1.31.7",
            "1.31.6",
            "1.31.5",
            "1.31.4",
            "1.31.3",
            "1.31.2",
            "1.31.1",
            "1.31.0",
            "1.31.0-rc.2",
            "1.31.0-rc.1",
            "1.31.0-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-2021-41801.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:20.759443248Z",
      "provider": "osv",
      "references": [
        "https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/",
        "https://phabricator.wikimedia.org/T279090"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-41801",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430334,
  "published_at": "2021-10-11T08:15:06.857+00:00"
}