High 8.8Published Oct 26, 2026

CVE-2026-105608Consul vulnerable to an authorization bypass in service mesh registration

Updated under an hour ago (Oct 28, 2026, 5:40 PM ET)

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It affects HashiCorp Consul and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for HashiCorp Consul

Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-178
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: HashiCorp
NVD analysis: Awaiting Analysis
Record last updated: Oct 26, 2026
First seen by InfoSec Signals: Oct 26, 2026

Affected products

Affected products

HashiCorp Consul hashicorp:consul (from the name)	from 2.0.4 before 2.1.0	CNA record
HashiCorp Consul Enterprise hashicorp:consul_enterprise (from the name)	from 2.0.4 before 2.1.0; affected at 1.21.18, fixed at 1.21.19, affected at 1.22.12	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.