CVE-Katalog

CVE-2023-43655

Composer vulnerabilities

Composer is a dependency manager for PHP. Users publishing a composer.phar to a public web-accessible server where the composer.phar can be executed as a php file may be subject to a remote code execution vulnerability if PHP also has `register_argc_argv` enabled in php.ini. Versions 2.6.4, 2.2.22 and 1.10.27 patch this vulnerability. Users are advised to upgrade. Users unable to upgrade should make sure `register_argc_argv` is disabled in php.ini, and avoid publishing composer.phar to the web as this is not best practice.

Schweregrad: Medium · CVSS 6.4CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Published: Sep 29, 2023, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.53% · Oct 27, 2026

Projects and upstream resources

[composer][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie	composer	`2.6.4-1`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debiantrixie	composer	`2.8.8-1+deb13u3`	Fixed	[CVE-2023-43655]
Debiansid	composer	`2.10.3-1`	Fixed	[CVE-2023-43655]
Debiansid	composer	`2.6.4-1`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debianforky	composer	`2.10.3-1`	Fixed	[CVE-2023-43655]
Debianforky	composer	`2.6.4-1`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debianbookworm	composer	`2.5.5-1+deb12u4`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debianbookworm	composer	`2.5.5-1+deb12u5`	Fixed	[CVE-2023-43655]

Showing 8 fix observations. All 22 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	composer	Not reported	UnknownSource applicability is not established	Provider not reported
UnknownRelease not reported	composer	`2.7.1-2ubuntu0.1~esm1`	UnknownSource applicability is not established	Provider not reported
Debianbookworm	composer	`2.5.5-1+deb12u4`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debianbookworm	composer	`2.5.5-1+deb12u5`	Fixed	[CVE-2023-43655]
Debianbookworm-security	composer	`2.5.5-1+deb12u2`	Affected	[CVE-2023-43655]
Debianforky	composer	`2.10.3-1`	Fixed	[CVE-2023-43655]
Debianforky	composer	`2.6.4-1`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debiansid	composer	`2.10.3-1`	Fixed	[CVE-2023-43655]
Debiansid	composer	`2.6.4-1`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debiantrixie	composer	`2.6.4-1`	FixedDistribution-reported fixed boundary	[CVE-2023-43655]
Debiantrixie	composer	`2.8.8-1+deb13u3`	Fixed	[CVE-2023-43655]
Opensuseleap 15.4	php-composer2	`2.2.3-150400.3.6.1`	UnknownSource applicability is not established	[SUSE-SU-2023:4041-1]Feb 4, 2026, 4:23:02 AM UTC
Opensuseleap 15.5	php-composer2	`2.2.3-150400.3.6.1`	UnknownSource applicability is not established	[SUSE-SU-2023:4041-1]Feb 4, 2026, 4:23:02 AM UTC
Opensusetumbleweed	php-composer2	`2.6.4-1.1`	UnknownSource applicability is not established	[OPENSUSE-SU-2024:13290-1]Feb 4, 2026, 2:46:16 AM UTC
Suselinux enterprise module for web and scripting 15 sp4	php-composer2	`2.2.3-150400.3.6.1`	UnknownSource applicability is not established	[SUSE-SU-2023:4041-1]Feb 4, 2026, 4:23:02 AM UTC
Suselinux enterprise module for web and scripting 15 sp5	php-composer2	`2.2.3-150400.3.6.1`	UnknownSource applicability is not established	[SUSE-SU-2023:4041-1]Feb 4, 2026, 4:23:02 AM UTC
Ubuntupro	composer	`2.0.13-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2023-43655]Feb 5, 2026, 1:51:11 AM UTC
Ubuntupro	composer	`2.0.9-2ubuntu2`	UnknownSource applicability is not established	[UBUNTU-CVE-2023-43655]Feb 5, 2026, 1:51:11 AM UTC
Ubuntupro	composer	`2.0.9-2ubuntu3`	UnknownSource applicability is not established	[UBUNTU-CVE-2023-43655]Feb 5, 2026, 1:51:11 AM UTC
Ubuntupro	composer	`2.1.12-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2023-43655]Feb 5, 2026, 1:51:11 AM UTC
Ubuntupro	composer	`2.2.6-2ubuntu4`	UnknownSource applicability is not established	[UBUNTU-CVE-2023-43655]Feb 5, 2026, 1:51:11 AM UTC
Ubuntupro	composer	`2.2.6-2ubuntu4+esm1`	UnknownSource applicability is not established	[UBUNTU-CVE-2023-43655]Feb 5, 2026, 1:51:11 AM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "composer",
      "status": "fixed",
      "release": "sid",
      "version": "2.10.3-1"
    },
    {
      "name": "composer",
      "status": "fixed",
      "release": "forky",
      "version": "2.10.3-1"
    },
    {
      "name": "composer",
      "status": "fixed",
      "release": "trixie",
      "version": "2.8.8-1+deb13u3"
    },
    {
      "name": "composer",
      "status": "fixed",
      "release": "bookworm",
      "version": "2.5.5-1+deb12u5"
    },
    {
      "name": "composer",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "2.5.5-1+deb12u2"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "composer",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "2.6.4-1"
    },
    {
      "bug": null,
      "name": "composer",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "2.6.4-1"
    },
    {
      "bug": null,
      "name": "composer",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "2.6.4-1"
    },
    {
      "bug": null,
      "name": "composer",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "2.5.5-1+deb12u4"
    }
  ],
  "distribution_packages": [
    {
      "name": "composer",
      "fixed_version": "not yet fixed",
      "applicability_unknown": true
    },
    {
      "name": "composer",
      "fixed_version": "2.7.1-2ubuntu0.1~esm1",
      "applicability_unknown": true
    },
    {
      "name": "composer",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.6-2ubuntu4+esm1"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "2.0.9-2ubuntu2",
        "2.0.9-2ubuntu3",
        "2.0.13-1ubuntu1",
        "2.1.12-1ubuntu1",
        "2.2.6-2ubuntu4"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-43655",
      "fixed_version": "2.2.6-2ubuntu4+esm1",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2023-43655",
      "provider_updated_at": "2026-02-05T01:51:11.312743Z",
      "applicability_unknown": true
    },
    {
      "name": "php-composer2",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.3-150400.3.6.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for web and scripting 15 sp4",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/SUSE-SU-2023:4041-1",
      "fixed_version": "2.2.3-150400.3.6.1",
      "provider_source": "pypi",
      "provider_record_id": "SUSE-SU-2023:4041-1",
      "provider_updated_at": "2026-02-04T04:23:02.931524Z",
      "applicability_unknown": true
    },
    {
      "name": "php-composer2",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.3-150400.3.6.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for web and scripting 15 sp5",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/SUSE-SU-2023:4041-1",
      "fixed_version": "2.2.3-150400.3.6.1",
      "provider_source": "pypi",
      "provider_record_id": "SUSE-SU-2023:4041-1",
      "provider_updated_at": "2026-02-04T04:23:02.931524Z",
      "applicability_unknown": true
    },
    {
      "name": "php-composer2",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.3-150400.3.6.1"
            }
          ]
        }
      ],
      "release": "leap 15.4",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/SUSE-SU-2023:4041-1",
      "fixed_version": "2.2.3-150400.3.6.1",
      "provider_source": "pypi",
      "provider_record_id": "SUSE-SU-2023:4041-1",
      "provider_updated_at": "2026-02-04T04:23:02.931524Z",
      "applicability_unknown": true
    },
    {
      "name": "php-composer2",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.3-150400.3.6.1"
            }
          ]
        }
      ],
      "release": "leap 15.5",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/SUSE-SU-2023:4041-1",
      "fixed_version": "2.2.3-150400.3.6.1",
      "provider_source": "pypi",
      "provider_record_id": "SUSE-SU-2023:4041-1",
      "provider_updated_at": "2026-02-04T04:23:02.931524Z",
      "applicability_unknown": true
    },
    {
      "name": "php-composer2",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.4-1.1"
            }
          ]
        }
      ],
      "release": "tumbleweed",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/openSUSE-SU-2024:13290-1",
      "fixed_version": "2.6.4-1.1",
      "provider_source": "pypi",
      "provider_record_id": "OPENSUSE-SU-2024:13290-1",
      "provider_updated_at": "2026-02-04T02:46:16.395776Z",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

Die Paketzuordnung läuft.

[Debian 12 (Bookworm)]

[composer]Unbekannt
Details (4)
- 2.5.5-1+deb12u5 · all · bookworm
  Behoben · Behoben: 2.5.5-1+deb12u4
  usn · composer · debian · bookworm; usn · composer · debian · 12
- 2.5.5-1+deb12u5 · all · bookworm
  Behoben · Behoben: 2.5.5-1+deb12u4
  usn · composer · debian · bookworm; usn · composer · debian · 12
- 2.5.5-1+deb12u2 · all · bookworm-security
  Betroffen · Behoben: 2.5.5-1+deb12u4
  usn · composer · debian · bookworm; usn · composer · debian · 12
- 2.5.5-1+deb12u2 · all · bookworm-security
  Betroffen · Behoben: 2.5.5-1+deb12u4
  usn · composer · debian · bookworm; usn · composer · debian · 12

[Debian 13 (Trixie)]

[composer]Unbekannt
Details (2)
- 2.8.8-1+deb13u3 · all · trixie
  Behoben · Behoben: 2.6.4-1
  usn · composer · debian · 13
- 2.8.8-1+deb13u3 · all · trixie
  Behoben · Behoben: 2.6.4-1
  usn · composer · debian · 13

[openSUSE Tumbleweed]

[php-composer2]Unbekannt
Quellpaket: [php-composer2]
Details (1)
- 2.10.3-1.1 · noarch · tumbleweed
  Behoben · Behoben: 2.6.4-1.1
  usn · php-composer2 · opensuse · tumbleweed

Beobachtet: Oct 28, 2026, 5:43:51 PM UTC

Referenzen

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]