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CVE-2026-50015

HIGH Exploitation: PoC
7.3
CVSS 3.1
Description
pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's patch application pipeline (@pnpm/patch-package) performs no path validation on file paths extracted from .patch files. An attacker who contributes a malicious patch file via a pull request can write attacker-controlled content to or delete arbitrary files on the filesystem during pnpm install, as the user running the install. The diff --git header paths containing ../../ sequences traverse out of the package directory, and the traversal is difficult to catch in code review because patch file diff headers are opaque to most reviewers. This vulnerability is fixed in 10.34.0 and 11.4.0.

Metadata

CVE ID
CVE-2026-50015
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-02 22:46 UTC
Published
2026-06-25 16:52 UTC
Last updated
2026-06-25 17:59 UTC
Primary CWE
CWE-22
CWE-22: Improper Limitation of a Pathname to a Restricted Di…
Vendor / Product
pnpm / pnpm
Sources
cve.org  ·  NVD

Severity & Metrics

7.3 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
pnpm pnpm — < 10.33.4, >= 11.0.0, < 11.4.0
Weakness (CWE)
CWESourceDescription
CWE-22 cna CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.3 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
References (1)
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