Vulnerability details
CVE-2026-81095
timescale pg-aiguide
Timescale pg-aiguide through 0.5.0 DNS Rebinding via Disabled Host Header Allow-List
CVSS 4.0
7.6High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.6High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| 6.8Medium | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| timescale | pg-aiguide | v ≤ 0.5.0 | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2026-08-27
- Last updated
- 2026-08-29
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.21%
Probability of exploitation in 30 days
12%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-346Origin Validation Error