Is CVE-2026-8596 actively exploited?

No active exploitation of CVE-2026-8596 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8596 be exploited remotely?

Yes. CVE-2026-8596 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8596?

CVE-2026-8596 has a CVSS score of 7.2 (HIGH).

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HIGH

CVE-2026-8596

CWE-312Published: May 14, 2026· Updated: May 15, 2026

7.2

CVSS v3.1

EPSS:0.17%probability of exploitation in 30 daysPercentile:37.1th

Official Description

Cleartext storage of sensitive information in the ModelBuilder/Serve component in Amazon SageMaker Python SDK before v2.257.2 and v3 before v3.8.0 might allow a remote authenticated actor to extract the HMAC signing key from SageMaker API responses and forge valid integrity signatures for specially crafted model artifacts, achieving code execution in inference containers. This issue requires a remote authenticated actor with permissions to call SageMaker describe APIs and S3 write access to the model artifact path.

To remediate this issue, we recommend upgrading to Amazon SageMaker Python SDK v2.257.2 or v3.8.0 and rebuild any models previously created with ModelBuilder using the updated SDK.

NVD Source

Technical Analysis

CVE-2026-8596 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.