Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-09-07 05:38

Modified

2026-09-10 09:15

Summary

Composer: Perforce source URL permits P4PORT `rsh:` command execution

Details

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.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "composer",
        "purl": "pkg:bitnami/composer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0"
            },
            {
              "fixed": "2.2.30"
            },
            {
              "introduced": "2.3.0"
            },
            {
              "fixed": "2.10.3"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-84361"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:getcomposer:composer:*:*:*:*:*:*:*:*",
      "cpe:2.3:a:getcomposer:composer:*:*:*:*:*:php:*:*"
    ],
    "severity": "High"
  },
  "details": "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.",
  "id": "BIT-composer-2026-84361",
  "modified": "2026-09-10T09:15:14.395Z",
  "published": "2026-09-07T05:38:23.093Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/commit/0aac50528e83ed635cf788333635897469440220"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/commit/199ad81a9cc6a2a5164ad79a8da26b2e19e521af"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/releases/tag/2.10.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/releases/tag/2.2.30"
    },
    {
      "type": "WEB",
      "url": "https://github.com/composer/composer/security/advisories/GHSA-rvx4-ffvw-m9q3"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84361"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Composer: Perforce source URL permits P4PORT `rsh:` command execution"
}

CVE-2026-84361 (GCVE-0-2026-84361)

Vulnerability from cvelistv5 – Published: 2026-09-01 20:06 – Updated: 2026-09-03 03:56

Title

Composer: Perforce source URL permits P4PORT `rsh:` command execution

Summary

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 00:00 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/composer/composer/security/adv…	x_refsource_CONFIRM
https://github.com/composer/composer/commit/0aac5…	x_refsource_MISC
https://github.com/composer/composer/commit/199ad…	x_refsource_MISC
https://github.com/composer/composer/releases/tag…	x_refsource_MISC
https://github.com/composer/composer/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
composer	composer	Affected: >= 1.0, < 2.2.30 Affected: >= 2.3.0, < 2.10.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-84361",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-02T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-03T03:56:08.149Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "composer",
          "vendor": "composer",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.0, \u003c 2.2.30"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.3.0, \u003c 2.10.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T20:06:48.375Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/composer/composer/security/advisories/GHSA-rvx4-ffvw-m9q3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/composer/composer/security/advisories/GHSA-rvx4-ffvw-m9q3"
        },
        {
          "name": "https://github.com/composer/composer/commit/0aac50528e83ed635cf788333635897469440220",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/composer/composer/commit/0aac50528e83ed635cf788333635897469440220"
        },
        {
          "name": "https://github.com/composer/composer/commit/199ad81a9cc6a2a5164ad79a8da26b2e19e521af",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/composer/composer/commit/199ad81a9cc6a2a5164ad79a8da26b2e19e521af"
        },
        {
          "name": "https://github.com/composer/composer/releases/tag/2.10.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/composer/composer/releases/tag/2.10.3"
        },
        {
          "name": "https://github.com/composer/composer/releases/tag/2.2.30",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/composer/composer/releases/tag/2.2.30"
        }
      ],
      "source": {
        "advisory": "GHSA-rvx4-ffvw-m9q3",
        "discovery": "UNKNOWN"
      },
      "title": "Composer: Perforce source URL permits P4PORT `rsh:` command execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-84361",
    "datePublished": "2026-09-01T20:06:48.375Z",
    "dateReserved": "2026-09-01T16:27:58.128Z",
    "dateUpdated": "2026-09-03T03:56:08.149Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.