CVE-2026-59947: Composer: URL-embedded HTTP-Basic username leaks to verbose logs (GitHub PAT exposure)

medium Affects composer/composer. Feed 2026.10.29.1, updated 2026-10-28; published 2026-07-20.

Composer: URL-embedded HTTP-Basic username leaks to verbose logs (GitHub PAT exposure)

Package: composer/composer Composer
Affected versions: >=2.3.0 and <2.10.2 or >=1.0.0 and <2.2.29
Fixed in: 2.10.2, 2.2.29
Severity: medium CVSS 4.7
Exploitation: not on CISA KEV · EPSS 0% (1.8th percentile)
Published: 2026-07-20
Source: osv.dev

References

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