Security advisory

{
  "id": "1ce896654c4fa5590d413c5d92f4c3e82adaba1eb6d24f2ba5bdadcf39a41bda",
  "url": "https://osv.dev/vulnerability/CVE-2025-61637",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-61637",
    "summary": "Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Action/mediawiki.Action.Edit.Preview.Js, resources/src/mediawiki.Page.Preview.Js. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.",
    "evidence": "osv:CVE-2025-61637",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-61637",
      "aliases": [
        "CVE-2025-61637"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wikimedia/mediawiki",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4db15f479679fa4102789af77077c357af462501"
                },
                {
                  "introduced": "0f21d5c6a37f7baa19c33a4f96bc04ab7992ca42"
                },
                {
                  "fixed": "c4b6b0912db6e5e4d3c0368226d4a164a1fc9fc3"
                },
                {
                  "introduced": "b2a11b6991c9aafa44dd5bc743746123849eafb3"
                },
                {
                  "fixed": "02f60e14ba59bfe6d4533054d7951887bc5f3702"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.39.14"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.39.15"
                      },
                      {
                        "fixed": "1.43.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.43.5"
                      },
                      {
                        "fixed": "1.44.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.44.0",
            "1.43.3",
            "1.43.2",
            "1.39.13",
            "1.44.0-rc.0",
            "1.43.1",
            "1.39.12",
            "1.43.0",
            "1.39.11",
            "1.43.0-rc.0",
            "1.39.10",
            "1.39.9",
            "1.39.8",
            "1.39.7",
            "1.39.7-alpha-T317451.2",
            "1.39.6",
            "1.39.5",
            "1.39.4",
            "1.39.3",
            "1.39.2",
            "1.39.1",
            "1.39.0",
            "1.39.0-rc.1",
            "1.39.0-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-2025-61637.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:42.774088385Z",
      "provider": "osv",
      "references": [
        "https://phabricator.wikimedia.org/T394856"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2025-61637",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 435466,
  "published_at": "2026-02-03T00:16:09.48+00:00"
}