CVE-2026-55180

pnpm: Repository config can expand victim environment secrets into registry requests before scripts run

State: Published
Severity: 6.5 Medium
Published: Jun 25, 2026
Updated: Jun 25, 2026
Reserved: Jun 16, 2026

Description

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm and pacquet expanded ${ENV_VAR} placeholders from repository-controlled .npmrc and pnpm-workspace.yaml into registry request destinations and registry credentials. A malicious repository could cause dependency resolution to send victim environment secrets to an attacker-selected registry before lifecycle scripts run. This vulnerability is fixed in 10.34.2 and 11.5.3.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-201 Insertion of Sensitive Information Into Sent Data
CWE-522 Insufficiently Protected Credentials

Affected Products

Product	Versions
pnpmpnpm	< 10.34.2Affected >= 11.0.0, < 11.5.3Affected

References

https://github.com/pnpm/pnpm/security/advisories/GHSA-3qhv-2rgh-x77r

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