CVE catalog
CVE-2026-88021
UBUNTU-CVE-2026-88021
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.34% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Ubuntu | consul | 18.04 | 0.6.4~dfsg-3 | vulnerable |
| Ubuntu | consul | 20.04 | 1.0.7~dfsg1-5ubuntu1 | vulnerable |
| Ubuntu | consul | 20.04 | 1.4.4~dfsg1-2ubuntu2 | vulnerable |
| Ubuntu | consul | 20.04 | 1.5.2+dfsg1-6 | vulnerable |
| Ubuntu | consul | 20.04 | 1.5.2+dfsg1-10 | vulnerable |
| Ubuntu | consul | 20.04 | 1.5.2+dfsg1-12 | vulnerable |
| Ubuntu | consul | 20.04 | 1.5.2+dfsg2-14 | vulnerable |
| Ubuntu | consul | 22.04 | 1.7.4+dfsg1-1 | vulnerable |
| Ubuntu | consul | 22.04 | 1.8.7+dfsg1-3 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed: