VulnerabilityDeferred

CVE-2026-103247

n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard.

MEDIUM 5.8EPSS 0.24%

Does this matter?

Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.

Description

n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard. Attackers with editor access to shared workflows can exploit mismatched node ID and name matching to retain victim credentials and redirect secrets to attacker-controlled hosts.

CVSS 4.0: 5.8 MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.24% probability · 15th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-639
Source: disclosure@vulncheck.com

EPSS trend

EPSS moved from 0.2% on 2 October 2026 to 0.2% on 26 October 2026.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.