Medium severity · published Oct 28, 2026
CVE-2026-118646
n8n before 1.123.85, 2.43.5, and 2.44.1 ReDoS via Read/Write Files Node
New
6.5
CVSS
–
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
before 1.123.85; 2.44.0 before 2.44.1; 2.0.0 before 2.43.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-118646
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-118646
vendor-advisory
https://github.com/n8n-io/n8n/security/advisories/GHSA-m7gv-mpg5-7c9v
third-party-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-redos-via-read-write-files-node
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