Vulnerability-Lookup

GHSA-GM2J-XQ8R-GJ87

Vulnerability from github – Published: 2026-09-03 15:32 – Updated: 2026-09-18 15:31

Details

n8n versions before 1.123.73, 2.35.4, and 2.36.2 pass message content in the Gmail (v1) and Brevo nodes to the mail composer without verifying it is a string. An authenticated user able to run a workflow can supply an expression that resolves to an object carrying a path or href property, causing the composer to read a local file accessible to the n8n process or fetch an internal URL (SSRF) and attach the result to the outgoing message.

Severity

6.5 (Medium)


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

7.1 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-85170"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T13:06:24Z",
    "severity": "HIGH"
  },
  "details": "n8n versions before 1.123.73, 2.35.4, and 2.36.2 pass message content in the Gmail (v1) and Brevo nodes to the mail composer without verifying it is a string. An authenticated user able to run a workflow can supply an expression that resolves to an object carrying a path or href property, causing the composer to read a local file accessible to the n8n process or fetch an internal URL (SSRF) and attach the result to the outgoing message.",
  "id": "GHSA-gm2j-xq8r-gj87",
  "modified": "2026-09-18T15:31:44Z",
  "published": "2026-09-03T15:32:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-95ph-833c-4wrp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85170"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/n8n-before-1.123.73-local-file-read-and-ssrf-via-gmail-and-brevo-nodes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/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"
    }
  ]
}

CVE-2026-85170 (GCVE-0-2026-85170)

Vulnerability from cvelistv5 – Published: 2026-09-03 11:22 – Updated: 2026-09-03 12:13

Title

n8n before 1.123.73 Local File Read and SSRF via Gmail and Brevo nodes

Summary

Severity

7.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-03 12:13 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6438 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/n8n-io/n8n/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/n8n-before-1…	third-party-advisory

Impacted products

3 products

Vendor	Product	Version
n8n-io	n8n	Affected: 0 , < 1.123.73 (semver) Unaffected: 1.123.73 (semver)
n8n-io	n8n	Affected: 0 , < 2.36.2 (semver) Unaffected: 2.36.2 (semver)
n8n-io	n8n	Affected: 0 , < 2.35.4 (semver) Unaffected: 2.35.4 (semver)

Date Public

2026-08-19 00:00

Credits

pawbednarz

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2026-09-03T12:13:17.670694Z",
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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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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