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CVE-2025-61648 Stored XSS through system messages in CheckUser

🗓️ 03 Feb 2026 00:19:43Reported by wikimedia-foundationType 
cvelist
 cvelist
🔗 www.cve.org👁 43 Views

Stored cross site scripting in CheckUser system messages via ShowIPButton.Vue and SpecialBlock.Js, affecting versions before 1.44.1.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "product": "CheckUser",
    "programFiles": [
      "modules/ext.checkUser.tempAccounts/components/ShowIPButton.vue",
      "modules/ext.checkUser.tempAccounts/SpecialBlock.js"
    ],
    "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/CheckUser/+/refs/heads/master",
    "vendor": "Wikimedia Foundation",
    "versions": [
      {
        "lessThan": "1.44.1",
        "status": "affected",
        "version": "*",
        "versionType": "semver"
      }
    ]
  }
]

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03 Feb 2026 00:19Current
CVSS 40
EPSS0.00173
SSVC
43