How severe is CVE-2026-23890?

CVE-2026-23890 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-23890 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23890?

CVE-2026-23890 affects Pnpm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23890?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-23890 have an EU (EUVD) identifier?

Yes. CVE-2026-23890 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4656.

When was CVE-2026-23890 published?

CVE-2026-23890 was published on 2026-01-26 and last updated on 2026-06-17.

CVE-2026-23890

CVE-2026-23890 is a medium-severity vulnerability in Pnpm with a CVSS 3.x base score of 6.5. 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-23.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4656
Weakness: CWE-23
Affected product: Pnpm
Published: 2026-01-26
Last modified: 2026-06-17

Description

pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's bin linking allows malicious npm packages to create executable shims or symlinks outside of `node_modules/.bin`. Bin names starting with `@` bypass validation, and after scope normalization, path traversal sequences like `../../` remain intact. This issue affects all pnpm users who install npm packages and CI/CD pipelines using pnpm. It can lead to overwriting config files, scripts, or other sensitive files. Version 10.28.1 contains a patch.

Frequently asked questions

What is CVE-2026-23890?: pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's bin linking allows malicious npm packages to create executable shims or symlinks outside of `node_modules/.bin`. Bin names starting with `@` bypass validation, and after scope normalization, path traversal sequences like `../../` remain intact. This issue affects all pnpm users who install npm packages and CI/CD pipelines using pnpm. It can lead to overwriting config files, scripts, or other sensitive files. Version 10.28.1 contains a patch.
How severe is CVE-2026-23890?: CVE-2026-23890 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-23890 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23890?: CVE-2026-23890 affects Pnpm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23890?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23890 have an EU (EUVD) identifier?: Yes. CVE-2026-23890 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4656.
When was CVE-2026-23890 published?: CVE-2026-23890 was published on 2026-01-26 and last updated on 2026-06-17.

References

Affected products (1)

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

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