Critical severity · published Jul 29, 2026
CVE-2026-16326
consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
10.0
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tooling · HashiCorp
0.1.0 before 0.1.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16326
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16326
discuss.hashicorp.com
https://discuss.hashicorp.com/t/hcsec-2026-24-multiple-vulnerabilities-impacting-hashicorp-consul-mcp-server/77612
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