{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-87911 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-87911 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-87911 is a critical command injection vulnerability in AWS Labs postgres MCP Server, published on 9 Sep 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-2026-87911 and fix it if it is affected.\n\nWhat it is: CVE-2026-87911 is a critical command injection vulnerability in AWS Labs postgres MCP Server, published on 9 Sep 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-2026-87911 in the wild and no public exploit code.\n\nAffected product: AWS Labs postgres 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-2026-87911/ (Markdown: https://insights.sbomify.com/CVE-2026-87911/index.md)","id":"CVE-2026-87911","markdown":"https://insights.sbomify.com/CVE-2026-87911/index.md","name":"CVE-2026-87911","record":{"aliases":[],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"PostgreSQL MCP Server","requires_auth":"none","summary":"An attacker can execute OS commands on the host by bypassing read-only SQL validation in the PostgreSQL MCP server.","user_interaction":"required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"},{"id":"CWE-184","name":"Incomplete List of Disallowed Inputs"}],"description":"An OS command injection weakness in the read-only enforcement of the SQL validation component in Amazon awslabs postgres-mcp-server before 1.1.7 might allow an unauthenticated actor to execute operating system commands on the host of a self-managed PostgreSQL server by placing a crafted COPY ... TO PROGRAM statement into content that is processed when an authenticated user interacts with the MCP server in its default read-only mode.\n\nTo remediate this issue, users should upgrade to version 1.1.7 or later.","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":"Command injection in AWS Labs postgres MCP Server","id":"CVE-2026-87911","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Missing S3 bucket ownership verification in the AWS Security Agent plugin for aws-agents-for-devsecops","id":"CVE-2026-87912"},"packages":[],"prev":{"headline":"tarfile hardlink fallback ignores custom extraction filter rejection via None","id":"CVE-2026-87910"},"products":["AWS Labs postgres MCP Server"],"published":"2026-09-09","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":"total"},"state":"PUBLISHED","updated":"2026-09-10","vendors":["AWS"]},"summary":"An attacker can execute OS commands on the host by bypassing read-only SQL validation in the PostgreSQL MCP server.","url":"https://insights.sbomify.com/CVE-2026-87911/"}