CVE-2026-72769GHSA-HX4H-VR3M-45VH
n8n before 1.123.67 Prototype Pollution via VM Expression Engine
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.123.67, 2.32.1, 2.31.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process (a sandbox escape), leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- n8n-io n8n
fixed in 1.123.67
- n8n-io n8n
From 2.32.0 · fixed in 2.32.1
- n8n-io n8n
From 2.0.0-rc.0 · fixed in 2.31.5
- n8nnpm
fixed in 1.123.67
- n8nnpm
From 2.32.0 · fixed in 2.32.1
- n8nnpm
From 2.0.0-rc.0 · fixed in 2.31.5