Vulnerability details

CVE-2026-115812

AWS multi-model-server

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

CVSS 4.0

9.3Critical

Official description

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 scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (AMZN)	`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`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (AMZN)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
AWS	multi-model-server	v ≤ 1.1.11	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-10-23
Last updated: 2026-11-02
State: Published
Assigner (CNA): AMZN
Kolun priority: 25 · Low

Exploit prediction (EPSS)

0.52%

Probability of exploitation in 30 days

45%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-23
Relative path traversal