UBUNTU-CVE-2026-45793

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Source
https://ubuntu.com/security/CVE-2026-45793
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45793.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-45793
Upstream
Published
2026-07-15T17:16:00Z
Modified
2026-07-22T11:39:12Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / composer

Package

Name
composer
Purl
pkg:deb/ubuntu/composer?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.0~alpha10+20150602-1
1.0.0~alpha10+20150602-2
1.0.0~alpha11-1
1.0.0~alpha11-1ubuntu1
1.0.0~alpha11-2
1.0.0~alpha11-3
1.0.0~beta1-1ubuntu1
1.0.0~beta2-1
1.0.0~beta2-1ubuntu0.1~esm1
1.0.0~beta2-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "composer",
            "binary_version": "1.0.0~beta2-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45793.json"

Ubuntu:Pro:18.04:LTS / composer

Package

Name
composer
Purl
pkg:deb/ubuntu/composer?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.5.1-1
1.5.2-1
1.6.2-1
1.6.3-1
1.6.3-1ubuntu0.1~esm1
1.6.3-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "composer",
            "binary_version": "1.6.3-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45793.json"

Ubuntu:Pro:20.04:LTS / composer

Package

Name
composer
Purl
pkg:deb/ubuntu/composer?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.9.0-2
1.9.1-1
1.9.2-1
1.9.3-1
1.10.0-1
1.10.1-1
1.10.1-1ubuntu0.1~esm1
1.10.1-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "composer",
            "binary_version": "1.10.1-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45793.json"