{
  "cveId": "CVE-2026-33347",
  "url": "https://patchblox.com/security/cve/CVE-2026-33347",
  "summary": "CVE-2026-33347 is fixed in php-league-commonmark on 1 platform, first by php-league-commonmark 1.3.1-1ubuntu2\u002Besm1, released March 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "php-league-commonmark: league/commonmark is a PHP Markdown parser",
  "description": "league/commonmark is a PHP Markdown parser. From version 2.3.0 to before version 2.8.2, the DomainFilteringAdapter in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like youtube.com.evil passes the allowlist check when youtube.com is an allowed domain. This issue has been patched in version 2.8.2.",
  "published": "2026-03-24T13:16:00Z",
  "severity": "Medium",
  "cvss": 6.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
  "epss": 0.0025,
  "epssPercentile": 0.1645,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "php-league-commonmark",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.3.9-1\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-33347",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33347",
      "released": "2026-03-24T20:16:29Z"
    },
    {
      "platform": "linux",
      "product": "php-league-commonmark",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.7.0-1\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-33347",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33347",
      "released": "2026-03-24T20:16:29Z"
    },
    {
      "platform": "linux",
      "product": "php-league-commonmark",
      "release": "Debian 14",
      "fixedVersion": "2.8.2-1",
      "fix": "DEBIAN-CVE-2026-33347",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33347",
      "released": "2026-03-24T20:16:29Z"
    },
    {
      "platform": "linux",
      "product": "php-league-commonmark",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.3.1-1ubuntu2\u002Besm1",
      "fix": "php-league-commonmark 1.3.1-1ubuntu2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-league-commonmark-1.3.1-1ubuntu2-esm1",
      "released": "2026-03-24T13:16:00Z"
    },
    {
      "platform": "linux",
      "product": "php-league-commonmark",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.6.7-1ubuntu0.1~esm1",
      "fix": "php-league-commonmark 1.6.7-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-php-league-commonmark-1.6.7-1ubuntu0.1-esm1",
      "released": "2026-03-24T13:16:00Z"
    },
    {
      "platform": "linux",
      "product": "php-league-commonmark",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.4.2-2ubuntu0.1~esm1",
      "fix": "php-league-commonmark 2.4.2-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-php-league-commonmark-2.4.2-2ubuntu0.1-esm1",
      "released": "2026-03-24T13:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}