{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18655 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-18655 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-18655 is a high-severity vulnerability in AWS amazon-mq-mcp-server, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-18655 and fix it if it is affected.\n\nWhat it is: CVE-2026-18655 is a high-severity vulnerability in AWS amazon-mq-mcp-server, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-18655 in the wild and no public exploit code.\n\nAffected product: AWS amazon-mq-mcp-server. 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-2026-18655/ (Markdown: https://insights.sbomify.com/CVE-2026-18655/index.md)","id":"CVE-2026-18655","markdown":"https://insights.sbomify.com/CVE-2026-18655/index.md","name":"CVE-2026-18655","record":{"aliases":[],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"AWS MQ MCP Server","requires_auth":"none","summary":"Prompt injection in AWS MQ MCP Server allows attackers to steal broker credentials and OAuth tokens by redirecting connections to malicious endpoints.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-923","name":"Improper Restriction of Communication Channel to Intended Endpoints"}],"description":"Improper restriction of intended endpoints in the RabbitMQ broker connection tools of the Amazon MQ MCP Server (awslabs.amazon-mq-mcp-server) before 2.0.24 may allow a remote unauthenticated actor (via prompt injection) to obtain Amazon MQ for RabbitMQ broker credentials or OAuth access tokens sent to a crafted endpoint controlled through a broker hostname introduced in the MCP client context.\n\nTo remediate this issue, users should upgrade to version 2.0.24.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Broker Credential and OAuth Token Disclosure in AWS Labs Amazon MQ MCP Server via Prompt Injection","id":"CVE-2026-18655","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Executable Resolution from Untrusted Project Directory in Kiro IDE on Windows","id":"CVE-2026-18656"},"packages":[],"prev":{"headline":"Disabled SSH host key verification in Amazon AWS CLI EMR helper commands","id":"CVE-2026-18654"},"products":["amazon-mq-mcp-server"],"published":"2026-08-03","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)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-03","vendors":["AWS"]},"summary":"Prompt injection in AWS MQ MCP Server allows attackers to steal broker credentials and OAuth tokens by redirecting connections to malicious endpoints.","url":"https://insights.sbomify.com/CVE-2026-18655/"}