CVE-2026-55697

pnpm: Repository-controlled configDependencies can select a pacquet native install engine

State: Published
Severity: 7.5 High
Published: Jun 25, 2026
Updated: Jun 29, 2026
Reserved: Jun 17, 2026

Description

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can install configDependencies declared in pnpm-workspace.yaml before command dispatch. Before the patch, a repository could declare pacquet or @pnpm/pacquet as a config dependency and pnpm treated that repository-controlled dependency as an install-engine opt-in. During install, pnpm resolved a platform-specific @pacquet/<platform>-<arch>/pacquet binary from node_modules/.pnpm-config/<packageName> and spawned it as the developer or CI user. This vulnerability is fixed in 10.34.2 and 11.5.3.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-494 Download of Code Without Integrity Check
CWE-829 Inclusion of Functionality from Untrusted Control Sphere

Affected Products

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

References

https://github.com/pnpm/pnpm/security/advisories/GHSA-gj8w-mvpf-x27x

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