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TI-2026-56057 Aliases CVE-2026-81095GHSA-x76c-qpjv-crcp

Timescale pg-aiguide through 0.5.0 DNS Rebinding via Disabled Host Header Allow-List

Priority LOW 35CWE-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
High · High · None
Fix status
No fix listed

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

Summary

pg-aiguide started its MCP HTTP transport without enabling the host allow-list the underlying SDK provides. src/httpServer.ts called the shared httpServerFactory helper and never set the DNS-rebinding-protection option, so the transport accepted a request whatever host it named. A page in a browser could therefore point a name it controlled at the address the server was bound to and drive the locally reachable MCP server through the visitor's browser. The protection was already available in the packaged transport and simply not turned on, so updating the dependency alone would not have closed it. Version 0.5.1 passes the option explicitly.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
timescalepg-aiguideup to 0.5.0—No fix listedCNA
  • pg-aiguide Vendortimescale Affected up to 0.5.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81095
  2. 2026-10-03 Alias added: GHSA-x76c-qpjv-crcp

References

Patch 1

Other 1

  • TI-2025-32594 pgai secrets exfiltration via `pull_request_target` CVSS 3.1CRITICAL 9.1
  • TI-2023-10611 TimescaleDB has incorrect access control CVSS 3.1HIGH 8.8
  • TI-2026-23232 TimescaleDB uses untrusted search path during extension upgrade CVSS 3.1HIGH 8.8
  • TI-2022-08073 Timescale TimescaleDB 1.x and 2.x before 2.5.2 may allow privilege escalation during… CVSS 3.1HIGH 8.0
  • TI-2026-80454 Type confusion in Timescale pgvectorscale DiskANN indexes CVSS 4.0HIGH 7.7
  • TI-2026-56062 Timescale tiger-gh-mcp-server DNS Rebinding via Disabled Host Header Allow-List CVSS 4.0HIGH 7.6
See all 10 →

Sources

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