{"cve":"CVE-2021-36213","nvd":{"published":"2021-07-17T18:15:07.820","modified":"2026-06-17T03:58:32.030","status":"Modified","description":"HashiCorp Consul and Consul Enterprise 1.9.0 through 1.10.0 default deny policy with a single L7 application-aware intention deny action cancels out, causing the intention to incorrectly fail open, allowing L4 traffic. Fixed in 1.9.8 and 1.10.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":[],"references":["https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855","https://github.com/hashicorp/consul/releases/tag/v1.10.1","https://security.gentoo.org/glsa/202208-09","https://www.hashicorp.com/blog/category/consul","https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855"],"products":["hashicorp:consul"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-36213","score":0.01685,"percentile":0.77013,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8h2g-r292-j8xh","url":"https://osv.dev/vulnerability/GHSA-8h2g-r292-j8xh","summary":"HashiCorp Consul L7 deny intention results in an allow action","modified":"2026-09-10T03:49:06.398225282Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/consul","purl":"pkg:golang/github.com/hashicorp/consul","ranges":["<1.10.1"],"fixed":["1.10.1"]}]},{"id":"GO-2022-0895","url":"https://osv.dev/vulnerability/GO-2022-0895","summary":"HashiCorp Consul L7 deny intention results in an allow action in github.com/hashicorp/consul","modified":"2026-02-04T03:52:00.669102Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/consul","purl":"pkg:golang/github.com/hashicorp/consul","ranges":["<1.10.1"],"fixed":["1.10.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}