CVE-2026-16326 — CRITICAL (10.0)

Vulnerability 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.

CVSS Score

10.0

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

LOW

Related Weaknesses (CWE)

CWE-488

References

https://discuss.hashicorp.com/t/hcsec-2026-24-multiple-vulnerabilities-impacting

FAQ

What is CVE-2026-16326?

CVE-2026-16326 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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 f...

How severe is CVE-2026-16326?

CVE-2026-16326 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-16326?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.