CVE-2026-115812

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

Risk score: 75/100
CVSS: 9.8 v3.1
Exploit chance (30 days): 0.7%
Published: 23 Oct 2026

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What to know

What it is: Amazon Web Services Multi Model Server versions 1.1.11 and earlier have a vulnerability that allows remote actors to execute arbitrary code via a crafted model archive. An attacker could use this to gain high privileges.
Affected: {'products': ['Amazon Web Services Multi Model Server'], 'packages': [], 'versions': ['1.1.11 and earlier']}
Fix: Discontinue use of Multi Model Server and migrate to a supported model serving solution
Exploitation: No known exploitation

Why it is Amber

CVSS 9.8 critical
Remotely exploitable without logging in

References

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

Original 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.

Last activity 23 Oct 2026. Patch Forecast updates every hour.