CVE Catalog

CVE-2026-18830

HighCVSS 8.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.29%

21th percentile - higher than 21% of all known CVEs

Summary

Insufficient input validation in Amazon Bedrock AgentCore might allow an authenticated remote user to execute configured tools bypassing model invocation and security controls via crafted content blocks in conversation messages. AWS has addressed this issue.

Risk Assessment

An attacker could bypass security controls and execute tools, potentially leading to unauthorized actions.

Recommendation

No customer action is required as AWS has already addressed the issue.

Related vulnerabilities

Original NVD description (English source)

Insufficient input validation in Amazon Bedrock AgentCore harness might allow an authenticated remote user to execute configured tools bypassing model invocation and security controls via crafted content blocks in conversation messages. AWS has addressed this issue. No customer action is required.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS