High [CVE-2026-55697] Arbitrary code execution via improper handling of config dependencies
This high-severity Red Hat Linux advisory covers CVE-2026-55697.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
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/-/pacquet binary from node_modules/.pnpm-config/ and spawned it as the developer or CI user.
This vulnerability is fixed in 10.34.2 and 11.5.3. A remote attacker could exploit this vulnerability by crafting a malicious repository that declares a configDependency in its pnpm-workspace.yaml file.
When a user installs packages from this repository, pnpm improperly treats the declared dependency as an install-engine opt-in, leading to the execution of a malicious binary. This allows for arbitrary code execution on the system of the developer or continuous integration (CI) user.
A remote attacker could exploit this by crafting a malicious repository that, when used by a developer or CI system, leads to the execution of a malicious binary. This vulnerability arises from pnpm's improper handling of `configDependencies` declared in `pnpm-workspace.yaml`, allowing an untrusted repository to opt into a native install engine.
Is CVE-2026-55697 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-55697 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-55697?
Upgrade to a fixed release named by Red Hat:
- 10.34.2
- 11.5.3
Confirm against the vendor advisory before you patch.
- < 10.34.2
- < 11.5.3
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
- 10.34.2
- 11.5.3
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Mitigation
Upgrade to a fixed release: 10.34.2, 11.5.3. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
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