Unrated severityNVD Advisory· Published Aug 4, 2026· Updated Aug 4, 2026
Insufficient input validation in Amazon Bedrock AgentCore harness InvokeHarness API
CVE-2026-18830
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
1- aws.amazon.com/security/security-bulletins/2026-073-aws/mitrevendor-advisory
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