{"id":"CVE-2026-18954","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-18954","generatedAt":"2026-10-28T04:46:30.089Z","title":"Incorrect authorization in the aggregation pipeline tool in Amazon AWS Labs DocumentDB MCP Server before 1.0.12 might allow an authenticated MCP client to perform inappropriate write operations on the connected database via write-capable aggregation…","description":"Incorrect authorization in the aggregation pipeline tool in Amazon AWS Labs DocumentDB MCP Server before 1.0.12 might allow an authenticated MCP client to perform inappropriate write operations on the connected database via write-capable aggregation pipeline stages that bypass the read-only mode enforcement logic.\n\n\n\nTo remediate this issue, users should upgrade to version 1.0.12 or later.","published":"2026-08-05T20:17:08.000Z","lastModified":"2026-10-23T21:10:00.000Z","status":"Analyzed","sourceIdentifier":"ff89ba41-3aa1-4d27-914a-91399e9639e5","cvss":{"version":"4.0","score":5.7,"severity":"MEDIUM","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-863"],"affected":["amazon/documentdb mcp server"],"epss":{"score":0.00158,"percentile":0.04941,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-076-aws/","tags":["Vendor Advisory"],"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"},{"url":"https://github.com/awslabs/mcp/releases/tag/2026.04.20260408085348","tags":["Release Notes"],"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"},{"url":"https://github.com/awslabs/mcp/security/advisories/GHSA-j694-4m5j-w8hc","tags":["Vendor Advisory"],"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-18954","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}