CVE-2026-105765 HashiCorp Consul - Authorization Bypass

HashiCorp Consul and Consul Enterprise 1.17.0 up to 2.0.4 contain an authorization bypass caused by improper access control in the agent's service mesh leaf certificate API, letting attackers without valid ACL tokens retrieve cached service leaf certificates and private keys, exploit requires no valid ACL token.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Authorization Bypass
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
26 October 2026
Updated
27 October 2026
Weakness
CWE-862

Vendor fix

Update to Consul Community Edition 2.1.0, Consul Enterprise 2.1.0 or 1.21.19.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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