Vulnerability in Hashicorp Consul
CVE-2026-105608
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in service mesh proxy registration. This may allow a user with service write permission to apply Envoy escape-hatch configuration without the required mesh write permission. This vulnerability (CVE-2026-105608) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-105608?
- CVE-2026-105608 is a high-severity vulnerability in Hashicorp Consul, classified under Improper Handling of Case Sensitivity. CVSS score: 8.8/10. Published 2026-10-26.
- How severe is CVE-2026-105608?
- High severity. CVSS v3 base score is 8.8 out of 10.