CVE-2026-25049

critical

Description

n8n is an open source workflow automation platform. Prior to versions 1.123.17 and 2.5.2, an authenticated user with permission to create or modify workflows could abuse crafted expressions in workflow parameters to trigger unintended system command execution on the host running n8n. This issue has been patched in versions 1.123.17 and 2.5.2.

References

https://thehackernews.com/2026/02/sshstalker-botnet-uses-irc-c2-to.html

https://www.theregister.com/2026/03/12/cisa_n8n_rce/

https://thehackernews.com/2026/02/researchers-observe-in-wild.html

https://www.theregister.com/2026/02/05/n8n_security_woes_roll_on/

https://www.securityweek.com/critical-n8n-sandbox-escape-could-lead-to-server-compromise/

https://thehackernews.com/2026/02/critical-n8n-flaw-cve-2026-25049.html

https://github.com/0xBlackash/CVE-2026-25049

https://github.com/otakuliu/Expression-Sandbox-Escape-Simulation-Lab

https://github.com/n8n-io/n8n/security/advisories/GHSA-6cqr-8cfr-67f8

https://github.com/n8n-io/n8n/commit/936c06cfc1ad269a89e8ef7f8ac79c104436d54b

https://github.com/n8n-io/n8n/commit/7860896909b3d42993a36297f053d2b0e633235d

Details

Source: Mitre, NVD

Published: 2026-02-04

Updated: 2026-02-05

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.9

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.4

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Severity: Critical

EPSS

EPSS: 0.00026