# CVE-2026-81095: Timescale pg-aiguide through 0.5.0 DNS Rebinding via Disabled Host Header Allow-List

> CVE-2026-81095: Timescale pg-aiguide through 0.5.0 DNS Rebinding via Disabled Host Header Allow-List. CVSS 6.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-81095
Last updated: 2026-09-23T17:17:43Z

- Published: 2026-08-27 14:50 UTC · Updated: 2026-09-23 17:17 UTC · Assigner: VulnCheck
- CVSS: 6.8 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- EPSS: 0.22%, 12th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-346

## 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.

## Affected vendors and products

- timescale: pg-aiguide

## Tracked companies

- [Timescale (Tiger Data)](https://rewindex.com/company/timescale-tiger-data.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-81095)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-81095)
- [https://github.com/timescale/pg-aiguide](https://github.com/timescale/pg-aiguide)
- [https://github.com/timescale/pg-aiguide/pull/121](https://github.com/timescale/pg-aiguide/pull/121)
- [https://www.vulncheck.com/advisories/timescale-pg-aiguide-through-0.5.0-dns-rebinding-via-disabled-host-header-allow-list](https://www.vulncheck.com/advisories/timescale-pg-aiguide-through-0.5.0-dns-rebinding-via-disabled-host-header-allow-list)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-81095 · Markdown: https://rewindex.com/cve/CVE-2026-81095.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-81095 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:18.859Z