CVE-2026-18830
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.
- Published Aug 4, 2026
- CVSS 8.6 high
- 0.5% chance of exploitation in the next 30 days (EPSS)
Affected software
In the news
- CVE-2026-18830 - Issue with Amazon Bedrock AgentCore harness – Insufficient Input Validation AWS Security Bulletins ·