No exploitation reported

CVE-2026-23890

No exploitation reported by the sources we read.

Published2026-01-26

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2026-01-2621:15CVE publishedNVD

Versions per branch

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

pnpmnpmall versions · fixed in 10.28.1

Vendor advisories

CVE-2026-23890 Red Hat Product Security2 known affected
pnpm: pnpm: Arbitrary code execution via path traversal in bin linking
org.keycloak-keycloak-parent as a component of Red Hat JBoss Enterprise Application Platform 8 · org.keycloak-keycloak-parent as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack

Full record on NVD

Fix

Workaround from the vendor Red Hat Product Security CVE-2026-23890 · 2 productsTo mitigate this issue, ensure that only trusted npm packages are installed when utilizing pnpm. Restrict the use of pnpm for package installation to controlled environments, such as secure CI/CD pipelines, to prevent the introduction of malicious packages. Implement robust package source validatio…
No fix available, says the vendor Red Hat Product Security CVE-2026-23890 · 2 productsFix deferred

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE record2026-01-28
FIRST EPSSEPSS score0.5 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Published: 2026-01-26
Last Modified: 2026-01-28

Frequently asked questions

What is CVE-2026-23890?

Is CVE-2026-23890 actively exploited?

Active exploitation of CVE-2026-23890 has not been confirmed. Its EPSS score was 0.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-23890?

CVE-2026-23890 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

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