Consul and Consul Enterprise are vulnerable to an authorization bypass in the Connect service mesh that may allow a service to reach a destination it is not authorized to access. When building Envoy RBAC rules to enforce Connect intentions, Consul did not correctly escape certain characters in service names, namespaces, and partitions, causing the generated authorization rules to match more broadly than intended. This vulnerability (CVE-2026-88021) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.
Metrics
Affected Vendors & Products
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History
Fri, 11 Sep 2026 09:30:00 +0000
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Hashicorp
Hashicorp consul Hashicorp consul Enterprise |
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| Vendors & Products |
Hashicorp
Hashicorp consul Hashicorp consul Enterprise |
Thu, 10 Sep 2026 20:30:00 +0000
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ssvc
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Thu, 10 Sep 2026 19:15:00 +0000
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| Description | Consul and Consul Enterprise are vulnerable to an authorization bypass in the Connect service mesh that may allow a service to reach a destination it is not authorized to access. When building Envoy RBAC rules to enforce Connect intentions, Consul did not correctly escape certain characters in service names, namespaces, and partitions, causing the generated authorization rules to match more broadly than intended. This vulnerability (CVE-2026-88021) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4. | |
| Title | Consul vulnerable to an authorization bypass in the Connect service mesh | |
| Weaknesses | CWE-185 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: HashiCorp
Published: 2026-09-10T18:58:26.951Z
Updated: 2026-09-10T19:21:46.156Z
Reserved: 2026-09-09T19:40:49.639Z
Link: CVE-2026-88021
Updated: 2026-09-10T19:21:31.963Z
Status : Awaiting Analysis
Published: 2026-09-10T19:17:39.250
Modified: 2026-09-10T20:17:31.317
Link: CVE-2026-88021
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