n8n before 1.123.67 Prototype Pollution via Edit Fields
Impact
n8n before versions 1.123.67, 2.31.5, and 2.32.1 has a prototype pollution vulnerability in the Edit Fields node, allowing an authenticated user to corrupt a shared global, causing a denial of service. The vulnerability is due to the node assigning output fields without restricting the field name. This affects versions less than 1.123.67, between 2.0.0-rc.0 and 2.31.5, and between 2.32.0 and 2.32.1.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.Affected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
n8n-io · VulnCheck
n8n
2 ranges
n8n-io · VulnCheck
n8n
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 1.123.67
semver versions
unaffected
1.123.67
semver versions
Other versions: unaffected
n8n-io · VulnCheck
n8n
2 ranges
n8n-io · VulnCheck
n8n
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
2.32.0 → before 2.32.1
semver versions
unaffected
2.32.1
semver versions
Other versions: unaffected
n8n-io · VulnCheck
n8n
2 ranges
n8n-io · VulnCheck
n8n
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-rc.0 → before 2.31.5
semver versions
unaffected
2.31.5
semver versions
Other versions: unaffected
Original source description
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node. The node assigns output fields via a dot-notation path setter without restricting the field name, allowing an authenticated user to name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global is used on the request-authentication path, the instance then fails every authenticated request, causing an instance-wide denial of service for all users until the process is restarted.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-72749View 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.
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
VulnCheck
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:*:*:*:*:*:node.js:*:*Before: 1.123.67
Vulnerable product
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*From (inclusive): 2.32.0
Before: 2.32.1
Vulnerable product
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*From (inclusive): 2.0.0-rc.0
Before: 2.31.5
Original applicability statements
[
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*",
"versionEndExcluding": "1.123.67"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*",
"versionEndExcluding": "2.32.1",
"versionStartIncluding": "2.32.0"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*",
"versionEndExcluding": "2.31.5",
"versionStartIncluding": "2.0.0-rc.0"
}
]
}
]
}
]Contributing organizations · 2
Assigning organization
Additional data publisher
What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.