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CVE-2026-118649high8.7

n8n before 2.43.5 and 2.44.1 Authorization Bypass via Crafted Workflow ID in Data Tables

Impact

n8n versions before 2.43.5 and 2.44.1 have an authorization bypass vulnerability via crafted workflow ID. An authenticated member can access Data Table rows in all projects.

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

2.44.0 → before 2.44.1

semver versions

unaffected

2.44.1

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 2.43.5

semver versions

unaffected

2.43.5

semver versions

unknown

Other versions: unaffected

Original source description

n8n before 2.43.5 and 2.44.x before 2.44.1 accepts a client-supplied workflow ID and caches each workflow's owner project in memory by that ID, so a crafted ID such as proto makes the Data Table project check match every project. An authenticated member who can create and run workflows can list, read, modify, and delete Data Table rows in all projects of the instance.

Inside the record

Evidence available

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

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

Original records

CVE-2026-118649

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-1321 ↗

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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): 2.44.0

Before: 2.44.1

Any condition may hold

Vulnerable product

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

Before: 2.43.5

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "2.44.0",
            "versionEndExcluding": "2.44.1"
          }
        ]
      }
    ]
  },
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "2.43.5"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-28
CISA-ADP

Additional data publisher

2026-10-29

What changed

Follow changes
  1. CVE · CVE-2026-118649

    Observed 2026-10-29T21:32:41.283Z · upstream updated 2026-10-29T20:54:35.672Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-29T15:36:46.048286Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "total"
      }
    ]
  }
]

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

Showing up to 50 most recent observed changes.

References

2 sources
github.com/n8n-io/n8n/security/advisories/GHSA-wvjj-qg37-pv73
vendor-advisoryVulnCheck
www.vulncheck.com/advisories/n8n-before-2.43.5-and-2.44.1-authorization-bypass-via-crafted-workflow-id-in-data-tables
third-party-advisoryVulnCheck