by Kastro
Paper/Archive/CVE-2026-44789

CVE-2026-44789

n8n-io n8n — n8n: HTTP Request Node Pagination Prototype Pollution to RCE

EPSS 0.5%CVSS 9.9
critical.is priorityof 100
39
CVSS 9.9 (NVD)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 44.7.447 × 208.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node. Combined with other techniques this could lead to RCE on the instance. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.

Affected

ProductAffectedFixed inSource
n8n< 1.123.43–CNA
n8n>= 2.0.0-rc.0, < 2.20.7–CNA
n8n>= 2.21.0, < 2.21.1–CNA

Scores by source

NVD9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub_M (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/n8n-io/n8n/security/advisories/GHSA-c8xv-5998-g76h