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Vulnerability details: VCID-fsge-arhh-ekh3
Vulnerability ID VCID-fsge-arhh-ekh3
Aliases CVE-2026-23889
GHSA-6x96-7vc8-cm3p
Summary pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's tarball extraction allows malicious packages to write files outside the package directory on Windows. The path normalization only checks for `./` but not `.\`. On Windows, backslashes are directory separators, enabling path traversal. This vulnerability is Windows-only. This issue impacts Windows pnpm users and Windows CI/CD pipelines (GitHub Actions Windows runners, Azure DevOps). It can lead to overwriting `.npmrc`, build configs, or other files. Version 10.28.1 contains a patch.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
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-2026-23889.json
epss 0.0002 https://api.first.org/data/v1/epss?cve=CVE-2026-23889
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-6x96-7vc8-cm3p
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/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0
generic_textual MODERATE https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0
ssvc Track https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0
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-6x96-7vc8-cm3p
cvssv3.1_qr MODERATE https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p
generic_textual MODERATE https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p
ssvc Track https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2026-23889
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-23889
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23889.json
https://api.first.org/data/v1/epss?cve=CVE-2026-23889
https://github.com/pnpm/pnpm
2433093 https://bugzilla.redhat.com/show_bug.cgi?id=2433093
6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0 https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0
CVE-2026-23889 https://nvd.nist.gov/vuln/detail/CVE-2026-23889
GHSA-6x96-7vc8-cm3p https://github.com/advisories/GHSA-6x96-7vc8-cm3p
GHSA-6x96-7vc8-cm3p https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p
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-2026-23889.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/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0
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/2026-01-27T21:40:27Z/ Found at https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0
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/2026-01-27T21:40:27Z/ 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-6x96-7vc8-cm3p
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/2026-01-27T21:40:27Z/ Found at https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p
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-2026-23889
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
2026-06-11T16:42:01.062002+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/23xxx/CVE-2026-23889.json 38.6.0