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Vulnerability details: VCID-sf1s-d3sy-3yh4
Vulnerability ID VCID-sf1s-d3sy-3yh4
Aliases CVE-2026-23888
GHSA-6pfh-p556-v868
Summary pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's binary fetcher allows malicious packages to write files outside the intended extraction directory. The vulnerability has two attack vectors: (1) Malicious ZIP entries containing `../` or absolute paths that escape the extraction root via AdmZip's `extractAllTo`, and (2) The `BinaryResolution.prefix` field is concatenated into the extraction path without validation, allowing a crafted prefix like `../../evil` to redirect extracted files outside `targetDir`. The issue impacts all pnpm users who install packages with binary assets, users who configure custom Node.js binary locations and CI/CD pipelines that auto-install binary dependencies. It can lead to overwriting config files, scripts, or other sensitive files leading to RCE. Version 10.28.1 contains a patch.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23 Relative Path Traversal
CWE-426 Untrusted Search Path
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23888.json
epss 0.0002 https://api.first.org/data/v1/epss?cve=CVE-2026-23888
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-6pfh-p556-v868
cvssv3.1 6.5 https://github.com/pnpm/pnpm
generic_textual MODERATE https://github.com/pnpm/pnpm
cvssv3.1 6.5 https://github.com/pnpm/pnpm/commit/5c382f0ca3b7cc49963b94677426e66539dcb3f5
generic_textual MODERATE https://github.com/pnpm/pnpm/commit/5c382f0ca3b7cc49963b94677426e66539dcb3f5
ssvc Track https://github.com/pnpm/pnpm/commit/5c382f0ca3b7cc49963b94677426e66539dcb3f5
cvssv3.1 6.5 https://github.com/pnpm/pnpm/releases/tag/v10.28.1
generic_textual MODERATE https://github.com/pnpm/pnpm/releases/tag/v10.28.1
ssvc Track https://github.com/pnpm/pnpm/releases/tag/v10.28.1
cvssv3.1 6.5 https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868
cvssv3.1_qr MODERATE https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868
generic_textual MODERATE https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868
ssvc Track https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2026-23888
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-23888
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23888.json
https://api.first.org/data/v1/epss?cve=CVE-2026-23888
https://github.com/pnpm/pnpm
2433095 https://bugzilla.redhat.com/show_bug.cgi?id=2433095
5c382f0ca3b7cc49963b94677426e66539dcb3f5 https://github.com/pnpm/pnpm/commit/5c382f0ca3b7cc49963b94677426e66539dcb3f5
CVE-2026-23888 https://nvd.nist.gov/vuln/detail/CVE-2026-23888
GHSA-6pfh-p556-v868 https://github.com/advisories/GHSA-6pfh-p556-v868
GHSA-6pfh-p556-v868 https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868
v10.28.1 https://github.com/pnpm/pnpm/releases/tag/v10.28.1
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23888.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/pnpm/pnpm
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/pnpm/pnpm/commit/5c382f0ca3b7cc49963b94677426e66539dcb3f5
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-27T21:40:56Z/ Found at https://github.com/pnpm/pnpm/commit/5c382f0ca3b7cc49963b94677426e66539dcb3f5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/pnpm/pnpm/releases/tag/v10.28.1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-27T21:40:56Z/ Found at https://github.com/pnpm/pnpm/releases/tag/v10.28.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-27T21:40:56Z/ Found at https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-23888
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.05897
EPSS Score 0.0002
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:41:54.337209+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/23xxx/CVE-2026-23888.json 38.6.0