{
  "affected": [
    {
      "affectedData": [
        {
          "product": "composer",
          "vendor": "composer",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.0, \u003c 2.2.29"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.3.0, \u003c 2.10.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer\u0027s binary installation flow to chmod an existing host file to a world-readable and world-executable mode during composer install, update, or require. This issue is fixed in versions 2.2.29 and 2.10.2."
    }
  ],
  "id": "CVE-2026-59946",
  "lastModified": "2026-07-10T19:14:18.563",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-09T14:21:07.902689Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-08T20:16:59.707",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1"
    },
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      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/releases/tag/2.10.2"
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    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/releases/tag/2.2.29"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx"
    }
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  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
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        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
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}

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "composer/composer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.3.0"
            },
            {
              "fixed": "2.10.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "composer/composer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0"
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            {
              "fixed": "2.2.29"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-59946"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-732"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-20T21:57:40Z",
    "nvd_published_at": "2026-07-08T20:16:59Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nA Composer package declares its executables in the `bin` field of its `composer.json`. When Composer installs a package, it processes each `bin` entry and changes the file mode of the corresponding file so it is executable.\n\nIf a `bin` entry contains `..` path segments, it can resolve to a path outside the package\u0027s own install directory. A malicious package can use this to make Composer run `chmod` against a file that already exists elsewhere on the machine. The resulting mode is world-readable and world-executable (0755 under the common umask of 022). This happens when the package is installed, e.g. during `composer install`, `composer update`, and `composer require`. Any dependency can trigger it, including a transitive dependency several levels deep.\n\nThe vulnerability *changes file permissions only, and does not read, modify, or execute the contents of the target file, and it is not remote code execution*. The impact is to confidentiality: a file with deliberately restrictive permissions, such as a private key at mode 0600, can be made readable by other users on the same host.\n\n## Am I affected?\n\nWe reviewed packagist.org data and found no evidence that any published package exploited this vulnerability. If you install packages only from packagist.org, you are not affected by any known exploitation.\n\nYou are potentially affected if *all* of the following are true:\n\n- Your Composer project depends, directly or transitively, on a package you do not fully trust.\n- A file you rely on for its restrictive permissions already exists at a path the Composer process can write to. Examples include SSH private keys, `.env` files, `~/.aws/credentials`, and `.netrc`.\n\nThe most likely way to be affected is to add or update a dependency that is malicious or has been compromised, then run an install on a machine that holds sensitive, permission-restricted files.\n\nTwo points to note:\n\n- `--no-scripts`, `--no-plugins`, and an `allow-plugins` allow-list do not prevent this. The permission change happens during normal binary installation, outside the plugin and script trust model.\n- Impact scales with privilege: As a regular user, only files owned by that user can be affected, which typically means your own secrets becoming readable by other local users on a shared machine. As root (for example, a CI container with no non-root user, or `sudo composer install`), any file on the system can be affected, including system credential stores.\n\n## Patched versions\n\nThe fix makes Composer reject any package whose binary entry contains a `..` path segment. During install/update the operation aborts before any file permission is changed, and the same check now also applies when a package is published to Packagist.org, so such packages are refused upstream.\n\nFixed in 2.2.29 (2.2 LTS line) and 2.10.2 (current 2.x line). Composer 1.x is end of life and will not be patched. 1.x users should upgrade to a patched 2.x release.\n\n## Workarounds\n\nUpgrading to a patched release is the only complete fix. There is no configuration option that disables the vulnerable behavior.",
  "id": "GHSA-gjfg-22fp-rrxx",
  "modified": "2026-07-20T21:57:40Z",
  "published": "2026-07-20T21:57:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59946"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/composer/composer"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Composer: Path traversal in package bin field lets dependencies chmod arbitrary host files"
}

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          "category": "impact",
          "date": "2026-08-03T21:09:33Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-59947"
    },
    {
      "cve": "CVE-2026-59948",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-59948"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a maliciously crafted package from an untrusted repository other than Packagist.org or Private Packagist can cause Composer to write attacker-controlled files outside the vendor directory and outside the project during install or update by using an invalid package name that is not correctly validated before dependency-resolution results are written or installed. This issue is fixed in versions 2.2.29 and 2.10.2.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "openSUSE Leap 16.0:php-composer2-2.8.9-160000.4.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-59948",
          "url": "https://www.suse.com/security/cve/CVE-2026-59948"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1271122 for CVE-2026-59948",
          "url": "https://bugzilla.suse.com/1271122"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "openSUSE Leap 16.0:php-composer2-2.8.9-160000.4.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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        }
      ],
      "threats": [
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          "category": "impact",
          "date": "2026-08-03T21:09:33Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-59948"
    }
  ]
}

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for Red Hat Hardened Images RPMs is now available.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "This update includes the following RPMs:\n\ncomposer:\n  * composer-2.10.2-1.hum1 (noarch)\n  * composer-2.10.2-1.hum1.src (src)",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:34854",
        "url": "https://access.redhat.com/errata/RHSA-2026:34854"
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        "summary": "https://images.redhat.com/",
        "url": "https://images.redhat.com/"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-59946",
        "url": "https://access.redhat.com/security/cve/CVE-2026-59946"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/",
        "url": "https://access.redhat.com/security/updates/classification/"
      },
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        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_34854.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking": {
      "current_release_date": "2026-08-03T10:48:57+00:00",
      "generator": {
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      "revision_history": [
        {
          "date": "2026-07-02T08:56:58+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-08-01T08:08:43+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-08-03T10:48:57+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Hardened Images",
                "product": {
                  "name": "Red Hat Hardened Images",
                  "product_id": "Red Hat Hardened Images",
                  "product_identification_helper": {
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                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Hardened Images"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "composer-main@noarch",
                "product": {
                  "name": "composer-main@noarch",
                  "product_id": "composer-main@noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/composer@2.10.2-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "composer-main@src",
                "product": {
                  "name": "composer-main@src",
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                  "product_identification_helper": {
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                  }
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            ],
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        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
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        "full_product_name": {
          "name": "composer-main@noarch as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:composer-main@noarch"
        },
        "product_reference": "composer-main@noarch",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "composer-main@src as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:composer-main@src"
        },
        "product_reference": "composer-main@src",
        "relates_to_product_reference": "Red Hat Hardened Images"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-59946",
      "cwe": {
        "id": "CWE-279",
        "name": "Incorrect Execution-Assigned Permissions"
      },
      "discovery_date": "2026-07-08T20:01:11.154736+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2498194"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Composer, a dependency manager for PHP. A malicious package can exploit a vulnerability in Composer\u0027s binary installation process by using specially crafted path segments. This allows an existing file on the host system to have its permissions changed to be world-readable and world-executable. This can lead to sensitive information disclosure and potentially allow an attacker to execute arbitrary code.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "composer: Composer: Insecure file permissions leading to information disclosure and potential execution",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat ships Composer version 2.10.2 in its products, which already includes the fix for this issue. Community distributions have been notified.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "Red Hat Hardened Images:composer-main@src"
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      },
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-59946"
        },
        {
          "category": "external",
          "summary": "RHBZ#2498194",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498194"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-59946",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-59946"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59946",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59946"
        },
        {
          "category": "external",
          "summary": "https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0",
          "url": "https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0"
        },
        {
          "category": "external",
          "summary": "https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1",
          "url": "https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1"
        },
        {
          "category": "external",
          "summary": "https://github.com/composer/composer/releases/tag/2.10.2",
          "url": "https://github.com/composer/composer/releases/tag/2.10.2"
        },
        {
          "category": "external",
          "summary": "https://github.com/composer/composer/releases/tag/2.2.29",
          "url": "https://github.com/composer/composer/releases/tag/2.2.29"
        },
        {
          "category": "external",
          "summary": "https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx",
          "url": "https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx"
        }
      ],
      "release_date": "2026-07-08T19:32:38.089000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-02T08:56:58+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:composer-main@noarch",
            "Red Hat Hardened Images:composer-main@src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:34854"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:composer-main@noarch",
            "Red Hat Hardened Images:composer-main@src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "composer: Composer: Insecure file permissions leading to information disclosure and potential execution"
    }
  ]
}