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

Affected: Bitnami: composer

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, when Composer is run with -vvv debug verbosity, it could print a credential embedded in the username slot of a repository or package URL, such as a GitHub Personal Access Token in https://TOKEN@host/, to debug output because AuthHelper, Url::sanitize, and ProcessExecutor did not sanitize username-only URL credentials. This issue is fixed in versions 2.2.29 and 2.10.2.

CLEANSTART-2026-KK97612 — Security fix for CVE-2026-59947 applied in: composer 2.10.2-r0

Affected: CleanStart: composer

Security vulnerability affects the composer package. This issue is resolved in later releases. See references for vulnerability details.

EUVD-2026-335309

fkie_cve-2026-59947

GHSA-g6xq-892h-64w3 — Composer: URL-embedded HTTP-Basic username leaks to verbose logs (GitHub PAT exposure)

Affected: Packagist: composer/composer

## Summary

When Composer is run with -vvv (debug verbosity), it could print a credential that was embedded directly in a repository or package URL, but not as a password, to its debug output. Composer already masked the password portion of such URLs, but the username portion was shown in clear text. Because GitHub and several other services support placing an access token in the username position of a URL (for example https://[token]@github.com/owner/repo), a token used that way could end up written to the verbose log in full.

This is an information disclosure issue. The credential is only ever exposed to whoever can already read Composer's debug output.

## Am I affected?

You are potentially affected only if **all** of the following apply:

- A credential is embedded inside a URL that Composer handles, e.g. in a `repositories` entry in composer.json, in a package dist/source URL - rather than being supplied through auth.json or the COMPOSER_AUTH environment variable. - The secret sits in the username slot of that URL (e.g. `https://TOKEN@host/…`). A normal `username:password@host` pair where the username is an ordinary account name did not expose the password, that was already masked. - Composer is run with -vvv (debug verbosity), and that output is retained or shared somewhere others can read it: public CI build logs, output pasted into an issue or chat, archived terminal sessions, and so on.

If you keep credentials in auth.json or environment variables, or you never r…

openSUSE-SU-2026:11268-1 — php-composer2-2.10.2-1.1 on GA media

php-composer2-2.10.2-1.1 on GA media

SUSE-SU-2026:23116-1 — Security update for php-composer2

Security update for php-composer2

UBUNTU-CVE-2026-59947

Affected: Ubuntu:Pro:16.04:LTS: composer, Ubuntu:Pro:18.04:LTS: composer, Ubuntu:Pro:20.04:LTS: composer, Ubuntu:Pro:22.04:LTS: composer, Ubuntu:Pro:24.04:LTS: composer, Ubuntu:25.10: composer, Ubuntu:26.04:LTS: composer

WID-SEC-W-2026-2235 — Composer: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Composer ausnutzen, um Sicherheitsmechanismen zu umgehen, um beliebige Dateien zu schreiben oder um Informationen offenzulegen. Zur erfolgreichen Ausnutzung sind teilweise bestimmte Konfigurationen erforderlich.