Uncontrolled Recursion in nest - #VU150163
Published: September 16, 2026
Vulnerability identifier: #VU150163
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled recursion in ServerTCP#handleMessage and ServerRMQ#handleMessage when serializing a client-supplied deeply nested message pattern. A remote attacker can send a specially crafted microservice message to cause a denial of service.
Only microservices using the TCP or RabbitMQ transport are affected.
Affected software
nest
Remediation
Install security update from vendor's website.
nest - addressed in versions 11.2.4, 12.0.2