{
  "cveId": "CVE-2026-84361",
  "url": "https://patchblox.com/security/cve/CVE-2026-84361",
  "summary": "CVE-2026-84361 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-84361, released September 3, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "composer: Composer is a dependency Manager for the PHP language",
  "description": "Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and 2.10.3, a malicious dependency package from a custom Composer repository or an untrusted composer.lock file could set source.type to perforce and source.url to an rsh: or jsh: P4PORT value. When the Perforce p4 client was installed and Composer installed the package from source through composer install or composer update, including --prefer-source, Composer\\Util\\Perforce passed the address to p4 without validation, causing p4 to run a local command with the privileges of the user or CI account. Packagist.org does not permit Perforce source metadata. This issue is fixed in versions 2.2.30 and 2.10.3.",
  "published": "2026-09-01T21:18:47Z",
  "severity": "important",
  "epss": 0.00502,
  "epssPercentile": 0.43256,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "composer",
      "release": "Debian 14",
      "fixedVersion": "2.10.3-1",
      "fix": "DEBIAN-CVE-2026-84361",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-84361",
      "released": "2026-09-03T01:35:34Z"
    },
    {
      "platform": "linux",
      "product": "composer",
      "release": "amzn 2023",
      "fixedVersion": "2.10.3-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3136",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3136",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "php-composer2",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.8.9-160000.5.1",
      "fix": "OPENSUSE-SU-2026:21778-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21778-1",
      "released": "2026-09-06T16:46:15Z"
    },
    {
      "platform": "linux",
      "product": "php-composer2",
      "release": "sles 15.6",
      "fixedVersion": "2.6.4-150600.3.18.1",
      "fix": "SUSE-SU-2026:4059-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4059-1",
      "released": "2026-09-08T07:00:14Z"
    },
    {
      "platform": "linux",
      "product": "php-composer2",
      "release": "sles 15.7",
      "fixedVersion": "2.6.4-150600.3.18.1",
      "fix": "SUSE-SU-2026:4059-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4059-1",
      "released": "2026-09-08T07:00:14Z"
    },
    {
      "platform": "linux",
      "product": "php-composer2",
      "release": "sles 16.0",
      "fixedVersion": "2.8.9-160000.5.1",
      "fix": "SUSE-SU-2026:23635-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23635-1",
      "released": "2026-09-06T16:46:30Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}