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CVE-2026-118646high7.1

n8n before 1.123.85, 2.43.5, and 2.44.1 ReDoS via Read/Write Files Node

Impact

n8n versions before 1.123.85, 2.43.5, and 2.44.1 contain a regular expression denial of service vulnerability. Authenticated members can block the event loop via crafted glob patterns, making the UI, API, webhooks, and health checks unresponsive. This occurs when attackers create and run workflows with wildcard-heavy File(s) Selector patterns.

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

0 → before 1.123.85

semver versions

unaffected

1.123.85

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

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

2.0.0 → before 2.43.5

semver versions

unaffected

2.43.5

semver versions

unknown

Other versions: unaffected

Original source description

n8n before 1.123.85, 2.43.5, and 2.44.1 contains a regular expression denial of service vulnerability that allows authenticated members to block the event loop via crafted glob patterns. Attackers who can create and run workflows can submit a wildcard-heavy File(s) Selector pattern causing exponential backtracking, making the UI, API, webhooks, and health checks unresponsive until restart.

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-2026-118646

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-1333 ↗

Inefficient Regular Expression Complexity

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:*:*:*:*:*:*:*:*

Before: 1.123.85

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:*:*:*:*:*:*:*:*

From (inclusive): 2.0.0

Before: 2.43.5

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "1.123.85"
          }
        ]
      }
    ]
  },
  {
    "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:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "2.0.0",
            "versionEndExcluding": "2.43.5"
          }
        ]
      }
    ]
  }
]
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-m7gv-mpg5-7c9v
vendor-advisoryVulnCheck
www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-redos-via-read-write-files-node
third-party-advisoryVulnCheck