# CVE-2026-47470: NVIDIA TensorRT-LLM improper input validation in gRPC server chat API

Source: https://junglewise.ai/threats/cve-2026-47470-nvidia-tensorrt-llm-improper-input-validation-in-grpc-server-chat  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-47470 · Severity: medium · CVSS 6.2 · Published 2026-07-14

NVIDIA TensorRT-LLM, a library used to optimize and accelerate large language model performance, contains a security flaw in its chat interface component. A local attacker could exploit this vulnerability to crash the service, leading to a denial of service. This could disrupt AI-powered applications and services relying on this library for real-time processing.

Technologies: [Nvidia TensorRT-LLM](https://junglewise.ai/threats/technologies/tensorrt-llm). Vendors: [Nvidia](https://junglewise.ai/threats/vendors/nvidia).

## Quick answers

**Is CVE-2026-47470 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47470 being exploited in the wild.

**How severe is CVE-2026-47470?** Medium severity, with a CVSS score of 6.2, published 14 July 2026.

**Which products and versions are affected?** Nvidia TensorRT-LLM up to and including v1.3.0 rc14.

**Is there a fix for CVE-2026-47470?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-47470 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-47470?** Check whether you run Nvidia TensorRT-LLM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A vulnerability exists in the gRPC server chat API endpoint of NVIDIA TensorRT-LLM due to improper input validation (CWE-20). A local attacker can exploit this flaw by sending specially crafted requests to the chat API. A successful exploit results in a denial of service (DoS) condition, impacting the availability of the LLM serving infrastructure. The vulnerability affects versions up to and including v1.3.0 rc14 across all platforms.

## Affected products

- NVIDIA TensorRT-LLM up to and including v1.3.0 rc14

## Timeline

- 2026-07-14: advisory: Initial disclosure by NVIDIA

## References

- [https://www.cve.org/CVERecord?id=CVE-2026-47470](https://www.cve.org/CVERecord?id=CVE-2026-47470)

## Related threats

- [NVIDIA TensorRT-LLM server-side request forgery](https://junglewise.ai/threats/cve-2026-65120-nvidia-tensorrt-llm-contains-a-vulnerability-where-an-attacker)
- [NVIDIA TensorRT-LLM untrusted tokenizer loading in KvCacheAwareRouter](https://junglewise.ai/threats/cve-2026-65119-nvidia-tensorrt-llm-for-any-platform-contains-a-vulnerability-in)
- [NVIDIA TensorRT-LLM server-side request forgery](https://junglewise.ai/threats/cve-2026-24269-nvidia-tensorrt-llm-contains-a-vulnerability-where-an-attacker)
- [NVIDIA TensorRT-LLM denial of service in OpenAI-compatible API](https://junglewise.ai/threats/cve-2026-47475-nvidia-tensorrt-llm-denial-of-service-in-openai-compatible-api)
- [NVIDIA TensorRT-LLM write-what-where condition](https://junglewise.ai/threats/cve-2026-47473-nvidia-tensorrt-llm-write-what-where-condition)