CVE-2026-115812: Relative path traversal during model archive extraction in Amazon Web Services Multi Model Server

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-23 · updated 2026-10-23
Weakness: CWE-23

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.

Affected products

AWS multi-model-server: through 1.1.11

References

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

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