CVE-2026-87106 (GCVE-0-2026-87106)
Vulnerability from cvelistv5 – Published: 2026-09-10 18:55 – Updated: 2026-09-10 19:02
VLAI
EPSS
VEX
Title
Consul vulnerable to a denial of service in the native RPC listener
Summary
Consul and Consul Enterprise are vulnerable to a denial of service in the native RPC listener that may allow an authenticated client to exhaust server memory before ACL authorization is evaluated. A client that can complete the internal RPC mTLS handshake may exploit this issue without holding a valid ACL token. This vulnerability (CVE-2026-87106) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 19:02 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| HashiCorp | Consul |
Affected:
1.21.0 , < 2.0.4
(semver)
|
guessed | |
| HashiCorp | Consul Enterprise |
Affected:
1.21.0 , < 2.0.4
(semver)
|
guessed |
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