{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-81102","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-08-26T16:00:34.461Z","datePublished":"2026-08-27T14:50:41.263Z","dateUpdated":"2026-08-29T11:48:14.917Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-08-29T11:48:14.917Z"},"datePublic":"2026-08-26T00:00:00.000Z","title":"Dropbox Dash MCP Server DNS Rebinding via Missing Host Header Validation","descriptions":[{"lang":"en","value":"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-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."}],"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-346","description":"Origin Validation Error","type":"CWE"}]}],"affected":[{"vendor":"dropbox","product":"mcp-server-dash","collectionURL":"https://github.com/dropbox/mcp-server-dash","repo":"https://github.com/dropbox/mcp-server-dash","defaultStatus":"unaffected","versions":[{"version":"84567b74e3c72e42d5e50ee07c56864613f519c2","status":"unaffected","versionType":"git"},{"version":"0","status":"affected","versionType":"git","lessThan":"84567b74e3c72e42d5e50ee07c56864613f519c2"}]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"LOW","baseScore":2.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","version":"3.1","baseSeverity":"LOW","baseScore":3.1,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"}}],"references":[{"url":"https://github.com/dropbox/mcp-server-dash","tags":["product"]},{"url":"https://github.com/dropbox/mcp-server-dash/pull/12","tags":["issue-tracking","patch"]},{"name":"VulnCheck Advisory: Dropbox Dash MCP Server DNS Rebinding via Missing Host Header Validation","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/dropbox-dash-mcp-server-dns-rebinding-via-missing-host-header-validation"}],"credits":[{"lang":"en","value":"Avishai Gonen (Pluto Security)","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"},"source":{"discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-27T18:24:11.152281Z","id":"CVE-2026-81102","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-28T15:59:46.600Z"}}]}}