How severe is CVE-2026-55697?

CVE-2026-55697 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-55697 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-55697?

CVE-2026-55697 affects Pnpm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-55697?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-55697 have an EU (EUVD) identifier?

Yes. CVE-2026-55697 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39483.

When was CVE-2026-55697 published?

CVE-2026-55697 was published on 2026-06-25 and last updated on 2026-06-30.

CVE-2026-55697

CVE-2026-55697 is a high-severity vulnerability in Pnpm with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39483
Weakness: CWE-78
Affected product: Pnpm
Published: 2026-06-25
Last modified: 2026-06-30

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.

Frequently asked questions

What is CVE-2026-55697?: 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.
How severe is CVE-2026-55697?: CVE-2026-55697 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-55697 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-55697?: CVE-2026-55697 affects Pnpm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-55697?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-55697 have an EU (EUVD) identifier?: Yes. CVE-2026-55697 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39483.
When was CVE-2026-55697 published?: CVE-2026-55697 was published on 2026-06-25 and last updated on 2026-06-30.

References

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

Affected products (1)

cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*

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