CVE-2026-16326

CRITICAL 10.0

consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode

CVSS Score

10.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-488
Vendor	hashicorp
Product	tooling
Published	Jul 29, 2026
Last Updated	Jul 29, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

HashiCorp / Tooling

0.1.0 < 0.1.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

discuss.hashicorp.com: https://discuss.hashicorp.com/t/hcsec-2026-24-multiple-vulnerabilities-impacting-hashicorp-consul-mcp-server/77612

Credits

This issue was reported by an internal HashiCorp team.