CVE-2026-110843

n8n before 2.41.4 and 2.42.x before 2.42.1 contains an uncontrolled resource consumption vulnerability in the unauthenticated OAuth authorize endpoint, which resolves clients by URL path but stores the caller's raw identifier as the record key. Unauthenticated attackers can send identifiers differing only in their query string to create unlimited first-party client records that bypass the registration cap, growing the database until the disk fills.

CVSS

No CVSS.

References

Link	Resource
https://github.com/n8n-io/n8n/security/advisories/GHSA-3qcw-p65v-c7vq
https://www.vulncheck.com/advisories/n8n-before-2.41.4-and-2.42.1-unauthenticated-unbounded-oauth-client-persistence-via-authorize-endpoint

Configurations

No configuration.

History

14 Oct 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 23:17

Updated : 2026-10-16 18:17

NVD link : CVE-2026-110843

Mitre link : CVE-2026-110843

CVE.ORG link : CVE-2026-110843

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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