BREW-PNPM-CVE-2026-24056 (GHSA-M733-5W8F-5GGW)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:28 – Updated: 2026-09-20 11:59 – Source website
VLAI
Summary
pnpm has symlink traversal in file:/git dependencies
Details
pnpm is a package manager. Prior to version 10.28.2, when pnpm installs a file: (directory) or git: dependency, it follows symlinks and reads their target contents without constraining them to the package root. A malicious package containing a symlink to an absolute path (e.g., /etc/passwd, ~/.ssh/id_rsa) causes pnpm to copy that file's contents into node_modules, leaking local data. The vulnerability only affects file: and git: dependencies. Registry packages (npm) have symlinks stripped during publish and are NOT affected. The issue impacts developers installing local/file dependencies andCI/CD pipelines installing git dependencies. It can lead to credential theft via symlinks to ~/.aws/credentials, ~/.npmrc, ~/.ssh/id_rsa. Version 10.28.2 contains a patch.
Severity
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"upstream_fixed_in": "10.28.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "pnpm",
"purl": "pkg:brew/pnpm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "11.21.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "git",
"upstream_evidence": [
{
"ecosystem": "GIT",
"key": "https://github.com/pnpm/pnpm",
"name": "https://github.com/pnpm/pnpm",
"strategy": "git",
"subject_version": "v12.5.1"
},
{
"ecosystem": "npm",
"key": "pkg:npm/pnpm@12.5.1",
"name": "pnpm",
"strategy": "registry",
"subject_version": "12.5.1"
}
]
},
"details": "pnpm is a package manager. Prior to version 10.28.2, when pnpm installs a `file:` (directory) or `git:` dependency, it follows symlinks and reads their target contents without constraining them to the package root. A malicious package containing a symlink to an absolute path (e.g., `/etc/passwd`, `~/.ssh/id_rsa`) causes pnpm to copy that file\u0027s contents into `node_modules`, leaking local data. The vulnerability only affects `file:` and `git:` dependencies. Registry packages (npm) have symlinks stripped during publish and are NOT affected. The issue impacts developers installing local/file dependencies andCI/CD pipelines installing git dependencies. It can lead to credential theft via symlinks to `~/.aws/credentials`, `~/.npmrc`, `~/.ssh/id_rsa`. Version 10.28.2 contains a patch.",
"id": "BREW-pnpm-CVE-2026-24056",
"modified": "2026-09-20T11:59:11Z",
"published": "2026-08-13T17:28:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pnpm/pnpm/releases/tag/v10.28.2"
},
{
"type": "ADVISORY",
"url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24056.json"
},
{
"type": "ADVISORY",
"url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-m733-5w8f-5ggw"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24056"
},
{
"type": "FIX",
"url": "https://github.com/pnpm/pnpm/commit/b277b45bc35ae77ca72d7634d144bbd58a48b70f"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "pnpm has symlink traversal in file:/git dependencies",
"upstream": [
"GHSA-m733-5w8f-5ggw",
"CVE-2026-24056"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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