Vulnerability-Lookup

CVE-2026-72772 (GCVE-0-2026-72772)

Vulnerability from cvelistv5 – Published: 2026-08-11 12:17 – Updated: 2026-08-11 14:57

Title

n8n before 2.32.1 Authentication Bypass via Token Exchange

Summary

n8n before 2.32.1 (and before 2.31.5) is vulnerable to account takeover via the Token Exchange Embed Login feature. When a validly-signed incoming token was matched to a local account by its email claim, the service did not verify that the email claim was verified, nor that the trusted key's permitted role ceiling covered that account. As a result, anyone able to obtain a token accepted by a configured trusted key (for example, a trusted issuer emitting unverified email addresses) could authenticate as any existing user and gain full account control. This issue only affects instances where the embed login feature is enabled and at least one trusted key source is configured.

Severity

8.9 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-640 - Weak Password Recovery Mechanism for Forgotten Password

Assigner

VulnCheck

References

2 references

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

Impacted products

2 products

Vendor	Product	Version
n8n-io	n8n	Affected: 0 , < 2.32.1 (semver) Unaffected: 2.32.1 (semver)
n8n-io	n8n	Affected: 0 , < 2.31.5 (semver) Unaffected: 2.31.5 (semver)

Date Public

2026-07-22 00:00

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-72772

Vulnerability from fkie_nvd - Published: 2026-08-11 13:19 - Updated: 2026-08-11 16:17

Severity

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

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/n8n-io/n8n/security/advisories/GHSA-8342-988q-86cr
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-token-exchange

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    }
  ],
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  "lastModified": "2026-08-11T16:17:36.860",
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GHSA-CWXF-925X-2CCM

Vulnerability from github – Published: 2026-08-11 15:32 – Updated: 2026-08-11 15:32

Details

Severity

8.9 (High)


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

Show details on source website

JSON

To clipboard

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  "affected": [],
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    "CVE-2026-72772"
  ],
  "database_specific": {
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      "CWE-640"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-11T13:19:07Z",
    "severity": "HIGH"
  },
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  "id": "GHSA-cwxf-925x-2ccm",
  "modified": "2026-08-11T15:32:38Z",
  "published": "2026-08-11T15:32:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-8342-988q-86cr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72772"
    },
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    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/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"
    }
  ]
}

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-2026-72772 (GCVE-0-2026-72772)

FKIE_CVE-2026-72772

GHSA-CWXF-925X-2CCM

Tags

Sightings

Nomenclature