n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via Webhook Responses Missing Sandbox Policy
Impact
n8n versions before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 have a stored cross-site scripting vulnerability. Authenticated members can serve HTML that runs on the n8n origin. This allows scripts to act with the session of users who open the webhook URL.
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 1.123.85
semver versions
unaffected
1.123.85
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
2.44.0 → before 2.44.1
semver versions
unaffected
2.44.1
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 → before 2.43.5
semver versions
unaffected
2.43.5
semver versions
Other versions: unaffected
Original source description
n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulnerability because some webhook response paths, such as error responses and responses without headers, omit the sandbox Content-Security-Policy. Authenticated members who can create and activate workflows can serve HTML that runs on the n8n origin, letting scripts act with the session of users who open the webhook URL.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-118648View 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.
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
Assigning organization
What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.