Vulnerability from bitnami_vulndb
Published
2026-07-14 08:40
Modified
2026-07-14 09:10
Summary
Composer: URL-embedded HTTP-Basic username leaks to verbose logs (GitHub PAT exposure)
Details

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, when Composer is run with -vvv debug verbosity, it could print a credential embedded in the username slot of a repository or package URL, such as a GitHub Personal Access Token in https://TOKEN@host/, to debug output because AuthHelper, Url::sanitize, and ProcessExecutor did not sanitize username-only URL credentials. This issue is fixed in versions 2.2.29 and 2.10.2.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "composer",
        "purl": "pkg:bitnami/composer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0"
            },
            {
              "fixed": "2.2.29"
            },
            {
              "introduced": "2.3.0"
            },
            {
              "fixed": "2.10.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-59947"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:getcomposer:composer:*:*:*:*:*:*:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, when Composer is run with -vvv debug verbosity, it could print a credential embedded in the username slot of a repository or package URL, such as a GitHub Personal Access Token in https://TOKEN@host/, to debug output because AuthHelper, Url::sanitize, and ProcessExecutor did not sanitize username-only URL credentials. This issue is fixed in versions 2.2.29 and 2.10.2.",
  "id": "BIT-composer-2026-59947",
  "modified": "2026-07-14T09:10:57.073Z",
  "published": "2026-07-14T08:40:59.896Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/commit/6bd66874ae523ecb69aca5964487a0cdfda03ef8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/commit/8887ad76fbd830cb1861a2b1fd8ead78ed1fa1ec"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/releases/tag/2.10.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/releases/tag/2.2.29"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/security/advisories/GHSA-g6xq-892h-64w3"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59947"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Composer: URL-embedded HTTP-Basic username leaks to verbose logs (GitHub PAT exposure)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.