CVE-2026-50015
pnpm: Arbitrary File Write/Delete via Malicious Patch File (Path Traversal)
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.
INFO
Published Date :
June 25, 2026, 6:16 p.m.
Last Modified :
June 29, 2026, 9:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update pnpm to 10.34.0 or later.
- Update pnpm to 11.4.0 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-50015.
| URL | Resource |
|---|---|
| https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4 | Exploit Mitigation Vendor Advisory |
| https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4 | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-50015 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-50015
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-50015 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-50015 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 29, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:* versions from (including) 11.0.0 up to (excluding) 11.4.0 *cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:* versions up to (excluding) 10.34.0 Added Reference Type GitHub, Inc.: https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4 Types: Exploit, Mitigation, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4 Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 25, 2026
Action Type Old Value New Value Added Reference https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4 Added SSVC {'id': 'CVE-2026-50015', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-25T17:59:13.012393Z'} -
New CVE Received by [email protected]
Jun. 25, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'pnpm', 'product': 'pnpm', 'versions': [{'status': 'affected', 'version': '< 10.33.4'}, {'status': 'affected', 'version': '>= 11.0.0, < 11.4.0'}]}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H Added CWE CWE-22 Added Reference https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4