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CVE-2026-118677medium5.9

n8n before 2.41.4 and 2.42.1 Local Gateway Deep-Link Silent Re-pairing to Attacker Instance

Impact

n8n versions before 2.41.4 and 2.42.x before 2.42.1 have a missing confirmation vulnerability in the Local Gateway desktop app, allowing attackers to silently re-pair the app with a different n8n instance. Attackers can lure users into opening a crafted link to connect their computer to an attacker-controlled instance. This may inherit previously granted permissions.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

n8n-io · VulnCheck

n8n

2 ranges
VulnCheck version evidence

Package identity

pkg:npm/n8nExplore n8n →

Identity supplied by VulnCheck. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

2.42.0 → before 2.42.1

semver versions

unaffected

2.42.1

semver versions

unknown

Other versions: unaffected

n8n-io · VulnCheck

n8n

2 ranges
VulnCheck version evidence

Package identity

pkg:npm/n8nExplore n8n →

Identity supplied by VulnCheck. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 2.41.4

semver versions

unaffected

2.41.4

semver versions

unknown

Other versions: unaffected

Original source description

n8n before 2.41.4 and 2.42.x before 2.42.1 contains a missing confirmation vulnerability in the Local Gateway desktop app that allows its deep-link connect handler to silently re-pair the app with a different n8n instance. Attackers can lure users running the Local Gateway into opening a crafted n8n-computer-use:// link to connect their computer to an attacker-controlled instance, inheriting previously granted permissions and acting on the computer through the gateway.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-118677

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-939 ↗

Improper Authorization in Handler for Custom URL Scheme

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*

From (inclusive): 2.42.0

Before: 2.42.1

Any condition may hold

Vulnerable product

cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*

Before: 2.41.4

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "2.42.0",
            "versionEndExcluding": "2.42.1"
          }
        ]
      }
    ]
  },
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "2.41.4"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 1
VulnCheck

Assigning organization

2026-10-28

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

2 sources
github.com/n8n-io/n8n/security/advisories/GHSA-cwm2-vhf5-27q9
vendor-advisoryVulnCheck
www.vulncheck.com/advisories/n8n-before-2.41.4-and-2.42.1-local-gateway-deep-link-silent-re-pairing-to-attacker-instance
third-party-advisoryVulnCheck