Vulnerability-Lookup

CVE-2026-50014 (GCVE-0-2026-50014)

Vulnerability from cvelistv5 – Published: 2026-06-25 16:51 – Updated: 2026-06-26 03:56

Title

pnpm: Git Fetch Argument Injection via Lockfile resolution.commit

Summary

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm passes the lockfile-controlled git resolution.commit value to git fetch without a -- separator or commit-format validation. For git dependencies fetched through the shallow-fetch path, a malicious lockfile can replace the expected 40-character commit hash with a Git option such as --upload-pack=<command>. For SSH and local transports, --upload-pack can execute the supplied command. HTTPS transports ignore --upload-pack, so the practical attack surface is primarily SSH or local git dependencies. This vulnerability is fixed in 10.34.0 and 11.4.0.

Severity

6.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/pnpm/pnpm/security/advisories/…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
pnpm	pnpm	Affected: < 10.33.4 Affected: >= 11.0.0, < 11.4.0

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-50014

Vulnerability from fkie_nvd - Published: 2026-06-25 18:16 - Updated: 2026-06-29 21:14

Severity

6.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/pnpm/pnpm/security/advisories/GHSA-p4xf-rf54-rj3x	Exploit, Mitigation, Vendor Advisory
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/pnpm/pnpm/security/advisories/GHSA-p4xf-rf54-rj3x	Exploit, Mitigation, Vendor Advisory

Impacted products

	Vendor	Product	Version
	pnpm	pnpm	*
	pnpm	pnpm	*

JSON

To clipboard

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  "affected": [
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      "affectedData": [
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          "product": "pnpm",
          "vendor": "pnpm",
          "versions": [
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    }
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  "lastModified": "2026-06-29T21:14:58.763",
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GHSA-P4XF-RF54-RJ3X

Vulnerability from github – Published: 2026-06-26 22:53 – Updated: 2026-06-26 22:53

Summary

pnpm: Git Fetch Argument Injection via Lockfile resolution.commit

Details

Summary

pnpm passes the lockfile-controlled git resolution.commit value to git fetch without a -- separator or commit-format validation. For git dependencies fetched through the shallow-fetch path, a malicious lockfile can replace the expected 40-character commit hash with a Git option such as --upload-pack=<command>. For SSH and local transports, --upload-pack can execute the supplied command. HTTPS transports ignore --upload-pack, so the practical attack surface is primarily SSH or local git dependencies.

Vulnerability Details

The vulnerable path is in fetching/git-fetcher/src/index.ts. When a git dependency host is configured for shallow fetching, pnpm calls:

await execGit(['fetch', '--depth', '1', 'origin', resolution.commit], { cwd: tempLocation })

Because resolution.commit is appended before a -- separator, Git can parse a commit value beginning with - as an option. The same file later passes the value to git checkout without a separator:

await execGit(['checkout', resolution.commit], { cwd: tempLocation })

resolution.commit comes from the lockfile and is typed as a plain string; pnpm does not validate it as a 40-character hexadecimal commit before passing it to Git.

Proof of Concept

bash autofyn_audit/exploits/vuln11_git_upload_pack_rce/exploit.sh
# Creates a local bare git repo and triggers the shallow-fetch path.
# Replaces the lockfile commit hash with '--upload-pack=touch /tmp/vuln11_pwned'.
# Result: PASS -- /tmp/vuln11_pwned created by injected touch command.

The PoC uses a local file://githost/... repository because the injection requires a local or SSH transport. HTTPS transport ignores --upload-pack.

Impact

Code execution as the user running pnpm install, under specific transport conditions. The attacker must modify pnpm-lock.yaml, and the affected dependency must use SSH or local git transport. HTTPS transport (the common case) is immune.

Suggested Remediation

Add a -- separator before lockfile-controlled git revision values. Validate resolution.commit matches /^[0-9a-f]{40}$/i before passing to Git.

Discovered by AutoFyn Full audit report: audit_report.md Exploit script: exploit.sh

Severity

6.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

Show details on source website

JSON

To clipboard

{
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      "package": {
        "ecosystem": "npm",
        "name": "pnpm"
      },
      "ranges": [
        {
          "events": [
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              "introduced": "0"
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        "ecosystem": "npm",
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      },
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            }
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        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50014"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-88"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-26T22:53:21Z",
    "nvd_published_at": "2026-06-25T18:16:39Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\npnpm passes the lockfile-controlled git `resolution.commit` value to `git fetch` without a `--` separator or commit-format validation. For git dependencies fetched through the shallow-fetch path, a malicious lockfile can replace the expected 40-character commit hash with a Git option such as `--upload-pack=\u003ccommand\u003e`. For SSH and local transports, `--upload-pack` can execute the supplied command. HTTPS transports ignore `--upload-pack`, so the practical attack surface is primarily SSH or local git dependencies.\n\n## Vulnerability Details\n\nThe vulnerable path is in `fetching/git-fetcher/src/index.ts`. When a git dependency host is configured for shallow fetching, pnpm calls:\n\n```typescript\nawait execGit([\u0027fetch\u0027, \u0027--depth\u0027, \u00271\u0027, \u0027origin\u0027, resolution.commit], { cwd: tempLocation })\n```\n\nBecause `resolution.commit` is appended before a `--` separator, Git can parse a commit value beginning with `-` as an option. The same file later passes the value to `git checkout` without a separator:\n\n```typescript\nawait execGit([\u0027checkout\u0027, resolution.commit], { cwd: tempLocation })\n```\n\n`resolution.commit` comes from the lockfile and is typed as a plain `string`; pnpm does not validate it as a 40-character hexadecimal commit before passing it to Git.\n\n## Proof of Concept\n\n```bash\nbash autofyn_audit/exploits/vuln11_git_upload_pack_rce/exploit.sh\n# Creates a local bare git repo and triggers the shallow-fetch path.\n# Replaces the lockfile commit hash with \u0027--upload-pack=touch /tmp/vuln11_pwned\u0027.\n# Result: PASS -- /tmp/vuln11_pwned created by injected touch command.\n```\n\nThe PoC uses a local `file://githost/...` repository because the injection requires a local or SSH transport. HTTPS transport ignores `--upload-pack`.\n\n## Impact\n\nCode execution as the user running `pnpm install`, under specific transport conditions. The attacker must modify `pnpm-lock.yaml`, and the affected dependency must use SSH or local git transport. HTTPS transport (the common case) is immune.\n\n## Suggested Remediation\n\nAdd a `--` separator before lockfile-controlled git revision values. Validate `resolution.commit` matches `/^[0-9a-f]{40}$/i` before passing to Git.\n\n---\n\n\u003e Discovered by [AutoFyn](https://github.com/SignalPilot-Labs/AutoFyn)\n\u003e Full audit report: [audit_report.md](https://github.com/tempcollab/pnpm/blob/main/autofyn_audit/audit_report.md)\n\u003e Exploit script: [exploit.sh](https://github.com/tempcollab/pnpm/blob/main/autofyn_audit/exploits/vuln11_git_upload_pack_rce/exploit.sh)",
  "id": "GHSA-p4xf-rf54-rj3x",
  "modified": "2026-06-26T22:53:21Z",
  "published": "2026-06-26T22:53:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-p4xf-rf54-rj3x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50014"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pnpm/pnpm"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "pnpm: Git Fetch Argument Injection via Lockfile resolution.commit"
}

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-50014 (GCVE-0-2026-50014)

FKIE_CVE-2026-50014

GHSA-P4XF-RF54-RJ3X

Summary

Vulnerability Details

Proof of Concept

Impact

Suggested Remediation

Tags

Sightings

Nomenclature