Vulnerability-Lookup

CVE-2026-71539 (GCVE-0-2026-71539)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:43 – Updated: 2026-08-19 03:56

Title

n8n: Race Condition in Git Clone Node Allows Authenticated Users to Achieve Remote Code Execution

Summary

n8n is an open source workflow automation platform. Prior to 1.123.64, 2.29.8, and 2.30.1, the Git node clone operation allows an authenticated workflow user to swap a validated directory for a symlink before cloning, planting a crafted repository in the community node directory that loads as a custom JavaScript node after restart and executes arbitrary code on the server. This issue is fixed in versions 1.123.64, 2.29.8, and 2.30.1.

Severity

8.9 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-18 00:00 UTC

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/n8n-io/n8n/security/advisories…	x_refsource_CONFIRM
https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64	x_refsource_MISC
https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8	x_refsource_MISC
https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
n8n-io	n8n	Affected: < 1.123.64 Affected: >= 2.0.0-rc.0, < 2.29.8 Affected: >= 2.30.0, < 2.30.1	guessed

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-71539",
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FKIE_CVE-2026-71539

Vulnerability from fkie_nvd - Published: 2026-08-18 15:17 - Updated: 2026-08-19 04:17

Severity

8.9 (High) - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64
	security-advisories@github.com	https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8
	security-advisories@github.com	https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1
	security-advisories@github.com	https://github.com/n8n-io/n8n/security/advisories/GHSA-g3r5-9h93-4j2c

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n8n",
          "vendor": "n8n-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.123.64"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.0.0-rc.0, \u003c 2.29.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.30.0, \u003c 2.30.1"
            }
          ]
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      ],
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    }
  ],
  "id": "CVE-2026-71539",
  "lastModified": "2026-08-19T04:17:37.983",
  "metrics": {
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      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.9,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
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        },
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          "options": [
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    }
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  "vulnStatus": "Received",
  "weaknesses": [
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}

GHSA-62JR-CQGR-XMH7

Vulnerability from github – Published: 2026-08-18 15:31 – Updated: 2026-08-18 15:31

Details

Severity

8.9 (High)


                  
                    CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-71539"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-18T15:17:01Z",
    "severity": "HIGH"
  },
  "details": "n8n is an open source workflow automation platform. Prior to 1.123.64, 2.29.8, and 2.30.1, the Git node clone operation allows an authenticated workflow user to swap a validated directory for a symlink before cloning, planting a crafted repository in the community node directory that loads as a custom JavaScript node after restart and executes arbitrary code on the server. This issue is fixed in versions 1.123.64, 2.29.8, and 2.30.1.",
  "id": "GHSA-62jr-cqgr-xmh7",
  "modified": "2026-08-18T15:31:48Z",
  "published": "2026-08-18T15:31:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-g3r5-9h93-4j2c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71539"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64"
    },
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      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-G3R5-9H93-4J2C

Vulnerability from github – Published: 2026-07-22 17:56 – Updated: 2026-07-22 17:56

Summary

n8n: Race Condition in Git Clone Node Allows Authenticated Users to Achieve Remote Code Execution

Details

Impact

A TOCTOU race condition in the Git node's clone operation lets an authenticated user bypass its path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This plants a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, and since nodes execute JavaScript, this yields arbitrary code execution on the server.

Both self-hosted and cloud instances are affected, where authenticated users can create and run workflows using the Git node.

Patches

Users should upgrade to the patched version once available to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Restrict n8n instance access to fully trusted users only. - Disable the Git node by adding n8n-nodes-base.git to the NODES_EXCLUDE environment variable. - Restrict network egress from the n8n instance to prevent connections to attacker-controlled git repositories.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Severity

8.9 (High)


                  
                    CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.123.64"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.30.0"
            },
            {
              "fixed": "2.30.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0-rc.0"
            },
            {
              "fixed": "2.29.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-65598"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-22T17:56:35Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Impact\nA TOCTOU race condition in the Git node\u0027s `clone` operation lets an authenticated user bypass its path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This plants a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, and since nodes execute JavaScript, this yields arbitrary code execution on the server.\n\nBoth self-hosted and cloud instances are affected, where authenticated users can create and run workflows using the Git node.\n\n## Patches\nUsers should upgrade to the patched version once available to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict n8n instance access to fully trusted users only.\n- Disable the Git node by adding `n8n-nodes-base.git` to the `NODES_EXCLUDE` environment variable.\n- Restrict network egress from the n8n instance to prevent connections to attacker-controlled git repositories.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.",
  "id": "GHSA-g3r5-9h93-4j2c",
  "modified": "2026-07-22T17:56:35Z",
  "published": "2026-07-22T17:56:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-g3r5-9h93-4j2c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65598"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/n8n-io/n8n"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/n8n-before-remote-code-execution-via-git-clone"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n: Race Condition in Git Clone Node Allows Authenticated Users to Achieve Remote Code Execution"
}

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.

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.

Action not permitted

CVE-2026-71539 (GCVE-0-2026-71539)

FKIE_CVE-2026-71539

GHSA-62JR-CQGR-XMH7

GHSA-G3R5-9H93-4J2C

Impact

Patches

Workarounds

Tags

Sightings

Nomenclature