{"id":"CVE-2026-81102","title":"The Dash MCP server bound its listener to the loopback address but never checked the host a request named","summary":"The Dash MCP server bound its listener to the loopback address but never checked the host a request named. src/mcp_server_dash.py constructed the server for its network mode with the interface restricted to loopback and no transport-secu…","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","cwe":["CWE-346"],"published":"2026-08-27","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:43:32.537","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-81102","references":[{"url":"https://github.com/dropbox/mcp-server-dash","label":"disclosure@vulncheck.com"},{"url":"https://github.com/dropbox/mcp-server-dash/pull/12","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/dropbox-dash-mcp-server-dns-rebinding-via-missing-host-header-validation","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00183,"epssPercentile":0.06993,"ingestedAt":"2026-09-24T20:51:40.236Z","slug":"CVE-2026-81102","body":"## Overview\n\nThe Dash MCP server bound its listener to the loopback address but never checked the host a request named. src/mcp_server_dash.py constructed the server for its network mode with the interface restricted to loopback and no transport-security settings, so a name that had been pointed at the loopback address still reached the listener while carrying the attacker's host name. A page in a visitor's browser could therefore drive the local server and invoke its company-search and file-detail tools under the Dropbox credential the server holds. Only the network mode was reachable this way; the standard input mode was not. The fix supplies transport-security settings that enable host checking and allow only the loopback name and port, rejecting other hosts before a tool runs. The repository publishes no versions, so the affected boundary is the commit preceding the fix.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}