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TI-2026-56064 Aliases CVE-2026-81102GHSA-37q3-f6jc-625w

Dropbox Dash MCP Server DNS Rebinding via Missing Host Header Validation

Priority LOW 11CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-346.

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-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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00183 7th percentileScored 2026-11-07
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

No affected products listed by the sources yet.

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81102
  2. 2026-10-03 Alias added: GHSA-37q3-f6jc-625w

References

Patch 1

Other 1

  • TI-2026-79218 Unbounded SAML message decompression in esaml allows memory exhaustion CVSS 4.0HIGH 8.7
  • TI-2026-79203 Unbounded atom creation in esaml SAML parsing crashes Erlang nodes CVSS 4.0HIGH 8.7
  • TI-2026-79217 Unbounded atom creation from unsigned LogoutResponse status codes in esaml allows atom table exhaustion CVSS 4.0HIGH 8.2
  • TI-2024-16922 In the Samly package before 1.4.0 for Elixir, Samly.State.Store.get_assertion/3 can… CVSS 3.1CRITICAL 9.8
  • TI-2026-38506 Missing one-time-use enforcement in Samly allows replay of SAML bearer assertions CVSS 4.0CRITICAL 9.1
  • TI-2024-05491 Protection mechanism failure in Dropbox Desktop CVSS 3.1HIGH 8.8
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences