# CVE-2026-115813: Amazon Web Services Multi Model Server server-side request forgery in model download

Source: https://junglewise.ai/threats/cve-2026-115813-server-side-request-forgery-in-the-model-download-path-in-amazon  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-23. Updated: 2026-10-23  
License: CC BY 4.0 with a link back

CVE-2026-115813 · Severity: medium · CVSS 5.8 · Published 2026-10-23

Amazon Web Services Multi Model Server is an open-source tool for serving machine learning models for inference. A server-side request forgery vulnerability in the model download path allows remote attackers to direct the unauthenticated management interface to make requests to internal network destinations, potentially accessing or manipulating internal services. The product has reached end-of-life with no planned fixes, and users should migrate to a supported alternative.

Vendors: [Amazon Web Services](https://junglewise.ai/threats/vendors/amazon-web-services).

## Quick answers

**Is CVE-2026-115813 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-115813 being exploited in the wild.

**How severe is CVE-2026-115813?** Medium severity, with a CVSS score of 5.8, published 23 October 2026.

**Which products and versions are affected?** Amazon Web Services Multi Model Server 1.1.11 and earlier.

**Is there a fix for CVE-2026-115813?** No fixed version is recorded yet. Bind the management interface to the loopback address so it is reachable only from localhost, and do not pass externally supplied URLs to the model-download path. For SageMaker-style deployments where management and inference share a port, ensure the serving port is accessible only to trusted callers and prioritize migration to a supported solution. 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-2026-115813 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-115813?** Check whether you run Amazon Web Services Multi Model Server 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.

## How to fix


Bind the management interface to the loopback address so it is reachable only from localhost, and do not pass externally supplied URLs to the model-download path. For SageMaker-style deployments where management and inference share a port, ensure the serving port is accessible only to trusted callers and prioritize migration to a supported solution.

## Technical details

The vulnerability is a server-side request forgery (SSRF) in the model download path of the MMS management interface, which does not require authentication. An attacker can craft a malicious model URL to cause the management interface to send requests to unintended network destinations, such as internal services or metadata endpoints. Deployments that expose the management interface to untrusted networks face elevated risk; the product is end-of-life with no fix available.

## Affected products

- Amazon Web Services Multi Model Server 1.1.11 and earlier

## Timeline

- 2026-10-23: disclosed

## References

- [https://aws.amazon.com/security/security-bulletins/2026-148-aws/](https://aws.amazon.com/security/security-bulletins/2026-148-aws/)

## Related threats

- [Amazon Web Services Multi Model Server path traversal and SSRF](https://junglewise.ai/threats/cve-2026-115812-and-issue-in-amazon-web-services-multi-model-server)