Relative Path Traversal Vulnerability in Amazon Web Services Multi Model Server
CVE-2026-115812

9.3CRITICAL

Key Information:

Vendor

Aws

Status
Multi-model-server
Vendor
CVE Published:
23 October 2026

What is CVE-2026-115812?

A vulnerability exists in Amazon Web Services Multi Model Server that permits remote actors to exploit relative path traversal during the extraction of model archives. This flaw could potentially allow malicious users to execute arbitrary code. Given that Multi Model Server has reached end of life, AWS strongly advises users to discontinue its use and transition to a supported model serving solution.

Affected Version(s)

multi-model-server 0 <= 1.1.11

References

https://aws.amazon.com/security/security-bulletins/2026-1...
vendor-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.