Skip to content
Heist/ feed
UnratedFix available

DEBIAN-CVE-2026-45793

Type: advisorySource: OSV1 source record

Composer is a dependency Manager for the PHP language. Prior to 1.10.28, 2.2.28, and 2.9.8, Composer\IO\BaseIO::loadConfiguration() validates GitHub OAuth tokens with the regex ^[.A-Za-z0-9_]+$ and interpolates rejected tokens into an UnexpectedValueException; GitHub Actions GITHUB_TOKEN values using the ghs__ format can contain -, fail validation, and be disclosed to stderr or CI logs. This issue is fixed in versions 1.10.28, 2.2.28, and 2.9.8.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-45793

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-45793

composer

Source reference: /affected/0/package/name

Affected versions
2.5.5-1

Source reference: /affected/0/versions

2.5.5-1+deb12u1

Source reference: /affected/0/versions

2.5.5-1+deb12u2

Source reference: /affected/0/versions

2.5.5-1+deb12u3

Source reference: /affected/0/versions

2.5.5-1+deb12u4

Source reference: /affected/0/versions

Fixed versions
2.5.5-1+deb12u5

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

composer

Source reference: /affected/1/package/name

Affected versions
2.8.8-1

Source reference: /affected/1/versions

2.8.8-1+deb13u1

Source reference: /affected/1/versions

2.8.8-1+deb13u2

Source reference: /affected/1/versions

Fixed versions
2.8.8-1+deb13u3

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

composer

Source reference: /affected/2/package/name

Affected versions
2.10.0~rc1-1

Source reference: /affected/2/versions

2.10.0~rc1-2

Source reference: /affected/2/versions

2.10.0~rc1-3

Source reference: /affected/2/versions

2.10.0~rc2-1

Source reference: /affected/2/versions

2.8.10-1

Source reference: /affected/2/versions

2.8.11-1

Source reference: /affected/2/versions

2.8.11-2

Source reference: /affected/2/versions

2.8.12-1

Source reference: /affected/2/versions

2.8.8-1

Source reference: /affected/2/versions

2.8.9-1

Source reference: /affected/2/versions

2.9.0~rc1-1

Source reference: /affected/2/versions

2.9.1-1

Source reference: /affected/2/versions

2.9.2-1

Source reference: /affected/2/versions

2.9.3-1

Source reference: /affected/2/versions

2.9.4-1

Source reference: /affected/2/versions

2.9.5-1

Source reference: /affected/2/versions

2.9.7-1

Source reference: /affected/2/versions

2.9.8-1

Source reference: /affected/2/versions

Fixed versions
2.10.0-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.5.5-1+deb12u5"
          }
        ]
      }
    ],
    "package": {
      "name": "composer",
      "purl": "pkg:deb/debian/composer?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.5.5-1",
      "2.5.5-1+deb12u1",
      "2.5.5-1+deb12u2",
      "2.5.5-1+deb12u3",
      "2.5.5-1+deb12u4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45793.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.8.8-1+deb13u3"
          }
        ]
      }
    ],
    "package": {
      "name": "composer",
      "purl": "pkg:deb/debian/composer?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.8.8-1",
      "2.8.8-1+deb13u1",
      "2.8.8-1+deb13u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45793.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.10.0-1"
          }
        ]
      }
    ],
    "package": {
      "name": "composer",
      "purl": "pkg:deb/debian/composer?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.10.0~rc1-1",
      "2.10.0~rc1-2",
      "2.10.0~rc1-3",
      "2.10.0~rc2-1",
      "2.8.10-1",
      "2.8.11-1",
      "2.8.11-2",
      "2.8.12-1",
      "2.8.8-1",
      "2.8.9-1",
      "2.9.0~rc1-1",
      "2.9.1-1",
      "2.9.2-1",
      "2.9.3-1",
      "2.9.4-1",
      "2.9.5-1",
      "2.9.7-1",
      "2.9.8-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45793.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57700 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-45793 · Revision 1Source updated