← CVE Intelligence

CVE-2026-45793

Composer: Github Actions issued GITHUB_TOKEN disclosure in GitHub Actions logs PUBLISHED

Description (CNA)

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_<id>_<base64url-JWT> 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.

Affected (CNA)

Vendor / productVersions
composer / composeraffected >= 1.0, < 1.10.28; affected >= 2.0.0, < 2.2.28; affected >= 2.3.0, < 2.9.8

CWE

CWE-200

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.