CVE-2026-115812 PUBLISHED

Relative path traversal during model archive extraction in Amazon Web Services Multi Model Server

Assigner: AMZN
Reserved: 23.10.2026 Published: 23.10.2026 Updated: 23.10.2026

Relative path traversal during model archive extraction in Amazon Web Services Multi Model Server 1.1.11 and earlier might allow remote actors to execute arbitrary code via a crafted model archive.

Multi Model Server is end of life and no fixed version is available. Users should discontinue use of Multi Model Server and migrate to a supported model serving solution.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	AWS
Product	multi-model-server
Versions	Default: unaffected affected from 0 to 1.1.11 (incl.)

References

https://aws.amazon.com/security/security-bulletins/2026-148-aws/

Problem Types

CWE-23 Relative path traversal CWE

Impacts

CAPEC-139 Relative Path Traversal
CAPEC-17 Using Malicious Files