CVE-2026-50017

pnpm binds unscoped user-level npm auth credentials to a repository-selected registry

State: Published
Severity: 6.9 Medium
Published: Jun 25, 2026
Updated: Jun 26, 2026
Reserved: Jun 2, 2026

Description

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm can send user-level unscoped npm authentication credentials to a registry chosen by a repository-local .npmrc file. In the reproduced case, the user's npm config contains a default registry and an unscoped _authToken. The repository does not provide a token-bearing auth line. It only sets registry= to a different registry URL. During normal pnpm metadata/install workflows, pnpm binds the user-origin unscoped credential to the repository-selected registry and sends it as an Authorization header. This vulnerability is fixed in 10.34.0 and 11.4.0.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-522 Insufficiently Protected Credentials

Affected Products

Product	Versions
pnpmpnpm	< 10.33.4Affected >= 11.0.0, < 11.4.0Affected

References

https://github.com/pnpm/pnpm/security/advisories/GHSA-cjhr-43r9-cfmw

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