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No exploitation reported

CVE-2026-126385

n8n before 2.46.1 OAuth Account Hijack via Unauthenticated Credential Callback

No exploitation reported by the sources we read.

  • Published2026-11-13
  • WeaknessCWE-306

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

n8n before 2.45.5, 2.46.x before 2.46.1, and 3.x before 3.0.1 contains a flaw in the OAuth2 credential callback of the dynamic-credential connect flow, which does not verify that the completing browser belongs to the user who started the flow. Members with access to a resolvable OAuth2 credential can send the provider authorization URL to a victim; if the victim consents without an active n8n session, the victim's tokens are stored under the member's identity, letting the member's workflows act as the victim.

Timeline

dates in UTC
  1. 2026-11-1309:35CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • n8n-io n8nother versions: not affected
    Affected
    • ≥ 2.46.0, < 2.46.1fixed in 2.46.1semver

    Not affected = 2.46.1

  • n8n-io n8nother versions: not affected
    Affected
    • < 2.45.5fixed in 2.45.5semver

    Not affected = 2.45.5

  • n8n-io n8nother versions: not affected
    Affected
    • ≥ 3.0.0, < 3.0.1fixed in 3.0.1semver

    Not affected = 3.0.1

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-13

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-126385 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 4.04.82026-11-13
  • CNACVSS 3.17.72026-11-13
  • NVDCVSS 3.17.7read 2026-11-13
  • CNAweakness (CWE)CWE-3062026-11-13
  • NVDweakness (CWE)CWE-306read 2026-11-13
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/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
Published
2026-11-13
Last Modified
2026-11-13
NVD status
Deferred
GitHub Advisory
GHSA-wp5v-mcm8-v3ch

Frequently asked questions

What is CVE-2026-126385?

n8n before 2.45.5, 2.46.x before 2.46.1, and 3.x before 3.0.1 contains a flaw in the OAuth2 credential callback of the dynamic-credential connect flow, which does not verify that the completing browser belongs to the user who started the flow. Members with access to a resolvable OAuth2 credential can send the provider authorization URL to a victim; if the victim consents without an active n8n session, the victim's tokens are stored under the member's identity, letting the member's workflows act as the victim.

Is CVE-2026-126385 actively exploited?

Active exploitation of CVE-2026-126385 has not been confirmed.

What is the CVSS score for CVE-2026-126385?

CVE-2026-126385 has a CVSS v3 base score of 7.7 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N.

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