CVE-2026-18830
Insufficient input validation in Amazon Bedrock AgentCore harness InvokeHarness API
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1287 |
| Vendor | aws |
| Product | amazon bedrock agentcore harness |
| Published | Aug 4, 2026 |
| Last Updated | Aug 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
AWS / Amazon Bedrock AgentCore harness
N/A