CVE-2026-55697 Details
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.
A vulnerability exists in pnpm, a package manager, in versions prior to 10.34.2 and 11.5.3. This issue allows pnpm to execute repository-declared configDependencies, specifically those related to pacquet or @pnpm/pacquet, before dispatching commands. During the installation process, pnpm resolves a platform-specific @pacquet/<platform>-<arch>/pacquet binary from node_modules/.pnpm-config/<packageName> and executes it in the context of the developer or CI user. This behavior poses a risk as it enables the execution of arbitrary binaries selected by the repository from the user's environment and filesystem.
Users can now manage pacquet delegation through a new allowlist feature, which can be set in trusted user-controlled configurations. However, this vulnerability requires no action if the allowlist is not used.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/pnpm/pnpm/security/advisories/GHSA-gj8w-mvpf-x27x | CISA-ADP | ExploitVendor Advisory |
| https://github.com/pnpm/pnpm/security/advisories/GHSA-gj8w-mvpf-x27x | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-494 | Download of Code Without Integrity Check | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
| CWE-829 | Inclusion of Functionality from Untrusted Control Sphere | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| pnpm pnpm | < 10.34.2 >= 11.0.0, < 11.5.3 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 30, 2026 | Initial Analysis | [email protected] |
| Jun 29, 2026 | CVE Modified | CISA-ADP |
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |