# CVE-2026-16326: consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode

> CVE-2026-16326: consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode. CVSS 10.0 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-16326
Last updated: 2026-10-24T13:10:00Z

- Published: 2026-07-29 18:40 UTC · Updated: 2026-10-24 13:10 UTC · Assigner: HashiCorp
- CVSS: 10.0 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
- EPSS: 0.54%, 45th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-488

## Description

In consul-mcp-server, versions 0.1.0 up to 0.1.3 did not properly isolate session state in stateless mode, which may allow one client's Consul authentication token to be used for subsequent requests from other clients. This vulnerability (CVE-2026-16326) is fixed in consul-mcp-server 0.1.4.

## Affected vendors and products

- HashiCorp: Tooling

## Tracked companies

- [HashiCorp](https://rewindex.com/company/hashicorp.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-16326)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-16326)
- [https://discuss.hashicorp.com/t/hcsec-2026-24-multiple-vulnerabilities-impacting-hashicorp-consul-mcp-server/77612](https://discuss.hashicorp.com/t/hcsec-2026-24-multiple-vulnerabilities-impacting-hashicorp-consul-mcp-server/77612)

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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-2026-16326 · Markdown: https://rewindex.com/cve/CVE-2026-16326.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-16326 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:05:40.398Z