NVIDIA Megatron Bridge YAML File Parsing Code Injection Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to execute arbitrary code on affected installations of NVIDIA Megatron Bridge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of model configuration files. The issue results from the lack of proper validation of a user-supplied string before using it to execute Python code. An attacker can leverage this vulnerability to execute code in the context of the current user.
Additional Details
NVIDIA has issued an update to correct this vulnerability. More details can be found at:
https://nvidia.custhelp.com/app/answers/detail/a_id/5841/~/security-bulletin%3A-nvidia-megatron-bridge---june-2026
Disclosure Timeline
- 2026-04-22 - Vulnerability reported to vendor
- 2026-10-22 - Coordinated public release of advisory
- 2026-10-22 - Advisory Updated
Credit
YJK(@YJK0805) of ZUSO ART
