High severity8.8NVD Advisory· Published Oct 26, 2026· Updated Oct 26, 2026

CVE-2026-105608

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Hashicorp/Consul Community Editionllm-fuzzy
Range: before 2.1.0
Hashicorp/Consulllm-fuzzy
Range: before 2.1.0 (Community) and before 1.21.19 (Enterprise)
Hashicorp/Consul Enterprisellm-fuzzy
Range: before 1.21.19

Patches

Vulnerability mechanics

References

discuss.hashicorp.com/t/hcsec-2026-47-consul-vulnerable-to-an-authorization-bypass-in-service-mesh-registration/77912nvd

News mentions

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