{
  "cveId": "CVE-2026-41305",
  "url": "https://patchblox.com/security/cve/CVE-2026-41305",
  "summary": "CVE-2026-41305 is fixed in node-postcss on 1 platform by DEBIAN-CVE-2026-41305 (version 8.5.12\u002B~cs9.3.32-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "PostCSS has XSS via Unescaped \u003C/style\u003E in its CSS Stringify Output",
  "description": "PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Versions prior to 8.5.10 do not escape \u0060\u003C/style\u003E\u0060 sequences when stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML \u0060\u003Cstyle\u003E\u0060 tags, \u0060\u003C/style\u003E\u0060 in CSS values breaks out of the style context, enabling XSS. Version 8.5.10 fixes the issue.",
  "published": "2026-04-24T03:16:11Z",
  "severity": "Moderate",
  "cvss": 6.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
  "cwe": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
  "epss": 0.00205,
  "epssPercentile": 0.10525,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41305",
  "fixes": [
    {
      "platform": "linux",
      "product": "node-postcss",
      "release": "Debian 14",
      "fixedVersion": "8.5.12\u002B~cs9.3.32-1",
      "fix": "DEBIAN-CVE-2026-41305",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41305",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}