CVE-2026-18830Insufficient input validation in Amazon Bedrock AgentCore harness InvokeHarness API
Updated under an hour ago ()
Does this affect you?
It affects AWS Amazon Bedrock AgentCore harness. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-1287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- AMZN
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
AWS Amazon Bedrock AgentCore harness aws:amazon_bedrock_agentcore_harness (from the name) | all versions | CNA record |
References
- https://aws.amazon.com/security/security-bulletins/2026-073-aws/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.