{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18830 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-18830 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-18830 is a high-severity vulnerability in AWS Amazon Bedrock AgentCore harness, published on 4 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-18830 and fix it if it is affected.\n\nWhat it is: CVE-2026-18830 is a high-severity vulnerability in AWS Amazon Bedrock AgentCore harness, published on 4 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-18830 in the wild and no public exploit code.\n\nAffected product: AWS Amazon Bedrock AgentCore harness. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-18830/ (Markdown: https://insights.sbomify.com/CVE-2026-18830/index.md)","id":"CVE-2026-18830","markdown":"https://insights.sbomify.com/CVE-2026-18830/index.md","name":"CVE-2026-18830","record":{"aliases":["GHSA-h8gv-mm2p-4q56"],"analysis":{"component_type":"cloud_service","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Amazon Bedrock AgentCore","requires_auth":"low_privilege","summary":"Authenticated users can bypass security controls and execute tools via crafted messages in Amazon Bedrock AgentCore harness.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1287","name":"Improper Validation of Specified Type of Input"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-11","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-11T06:52:24Z","kind":"github_poc","ref":"https://github.com/huzjie/aegisagent","stars":0,"title":"AegisAgent - Runtime security gateway \u0026 privilege governance for AI agents. Cryptographic tool-call provenance (CoreBreak/CVE-2026-18830/18236/64650 defense), policy engine, sandbox isolation, HITL approval, MCP security proxy, tamper-evident audit."}],"tier":"poc_unverified"},"has_fix":null,"headline":"Insufficient input validation in Amazon Bedrock AgentCore harness InvokeHarness API","id":"CVE-2026-18830","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Vulnerabilities in IBM AIX and PowerVM VIOS","id":"CVE-2026-18832"},"packages":[],"prev":{"headline":"Vulnerabilities in IBM AIX and PowerVM VIOS","id":"CVE-2026-18828"},"products":["Amazon Bedrock AgentCore harness"],"published":"2026-08-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-11","vendors":["AWS"]},"summary":"Authenticated users can bypass security controls and execute tools via crafted messages in Amazon Bedrock AgentCore harness.","url":"https://insights.sbomify.com/CVE-2026-18830/"}