CVE-2026-50021
pnpm: Integrity Check Bypass via Missing Lockfile Integrity Field
Description
pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's tarball extraction worker skips integrity verification when the integrity field is absent from the lockfile resolution. If an attacker can both modify pnpm-lock.yaml to remove the integrity: field and cause the referenced registry URL to serve altered package content, pnpm install --frozen-lockfile can install the altered package without an integrity error. npm's npm ci enforces integrity by default; pnpm's behavior of silently skipping verification is a pnpm-specific fail-open gap. 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 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update pnpm to version 10.34.0 or later.
- Update pnpm to version 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-2026-50021.
| URL | Resource |
|---|---|
| https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3 | Exploit Mitigation Vendor Advisory |
| https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3 | 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-2026-50021 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-2026-50021
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-2026-50021 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-50021 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 CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N 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-q6j5-fjx5-2mc3 Types: Exploit, Mitigation, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3 Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 26, 2026
Action Type Old Value New Value Changed SSVC {'id': 'CVE-2026-50021', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-26T02:10:01.033659Z'} {'id': 'CVE-2026-50021', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-25T00:00:00+00:00'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 26, 2026
Action Type Old Value New Value Added Reference https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3 Added SSVC {'id': 'CVE-2026-50021', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-26T02:10:01.033659Z'} -
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': '< 10.34.0'}, {'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 tarball extraction worker skips integrity verification when the integrity field is absent from the lockfile resolution. If an attacker can both modify pnpm-lock.yaml to remove the integrity: field and cause the referenced registry URL to serve altered package content, pnpm install --frozen-lockfile can install the altered package without an integrity error. npm's npm ci enforces integrity by default; pnpm's behavior of silently skipping verification is a pnpm-specific fail-open gap. This vulnerability is fixed in 10.34.0 and 11.4.0. Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N Added CWE CWE-354 Added Reference https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3