Security advisory

{
  "id": "39d8579585430c7ce74af943146dc6b7e5cb42e4ee17fff1ed5af83fad06785f",
  "url": "https://osv.dev/vulnerability/CVE-2019-19910",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-19910",
    "summary": "The MinervaNeue Skin in MediaWiki from 2019-11-05 to 2019-12-13 (1.35 and/or 1.34) mishandles certain HTML attributes, as demonstrated by IMG onmouseover= (impact is XSS) and IMG src=http (impact is disclosing the client's IP address). This can occur within a talk page topical header that is viewed within a mobile (MobileFrontend) context.",
    "evidence": "osv:CVE-2019-19910",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-19910",
      "aliases": [
        "CVE-2019-19910"
      ],
      "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": "ba90e337a4a58eb3b2fba43745d8de4a1cdafec1"
                },
                {
                  "last_affected": "2303b05125b2cc046a20d614786174ea803143eb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:1.34:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.34"
                      },
                      {
                        "last_affected": "1.34"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:mediawiki:mediawiki:1.35:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.35"
                      },
                      {
                        "last_affected": "1.35"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.34",
            "1.35"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19910.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:40.335507198Z",
      "provider": "osv",
      "references": [
        "https://phabricator.wikimedia.org/T240487",
        "https://gerrit.wikimedia.org/r/q/Ida471291f1698387a26736931ab17e6899e05b51"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-19910",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434894,
  "published_at": "2019-12-19T19:15:14.327+00:00"
}