CVE-2026-88021 Affecting consul-fips-2 package, versions <2.0.4-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-CONSULFIPS2-20147410
- published26 Sept 2026
- disclosed10 Sept 2026
Introduced: 10 Sep 2026
CVE-2026-88021 (opens in a new tab)How to fix?
Upgrade Minimos:latest consul-fips-2 to version 2.0.4-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream consul-fips-2 package and not the consul-fips-2 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
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.
References
- https://www.cve.org/CVERecord?id=CVE-2026-88021
- https://github.com/advisories/GHSA-9p3q-p26q-fxxc
- https://osv.dev/vulnerability/MINI-hv3j-3x8j-3q96
- https://osv.dev/vulnerability/CVE-2026-88021
- https://discuss.hashicorp.com/t/hcsec-2026-37-consul-vulnerable-to-an-authorization-bypass-in-the-connect-service-mesh/77739