{"cve":"CVE-2023-30851","nvd":{"published":"2023-05-25T18:15:10.240","modified":"2026-06-17T05:55:46.380","status":"Modified","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. This issue only impacts users who have a HTTP policy that applies to multiple `toEndpoints` AND have an allow-all rule in place that affects only one of those endpoints. In such cases, a wildcard rule will be appended to the set of HTTP rules, which could cause bypass of HTTP policies. This issue has been patched in Cilium 1.11.16, 1.12.9, and 1.13.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.3},"cwes":["CWE-693"],"references":["https://github.com/cilium/cilium/releases/tag/v1.11.16","https://github.com/cilium/cilium/releases/tag/v1.12.9","https://github.com/cilium/cilium/releases/tag/v1.13.2","https://github.com/cilium/cilium/security/advisories/GHSA-2h44-x2wx-49f4","https://github.com/cilium/cilium/releases/tag/v1.11.16"],"products":["cilium:cilium"],"source":"nvd","synced_at":"2026-10-19T21:38:24.161619714+00:00"},"epss":{"cve":"CVE-2023-30851","score":0.00655,"percentile":0.51384,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2h44-x2wx-49f4","url":"https://osv.dev/vulnerability/GHSA-2h44-x2wx-49f4","summary":"Potential HTTP policy bypass when using header rules in Cilium","modified":"2026-09-10T03:49:54.485621303Z","packages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":["<1.11.16"],"fixed":["1.11.16"]},{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":[">=1.12.0 <1.12.9"],"fixed":["1.12.9"]},{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":[">=1.13.0 <1.13.2"],"fixed":["1.13.2"]}]},{"id":"GO-2023-1785","url":"https://osv.dev/vulnerability/GO-2023-1785","summary":"Potential HTTP policy bypass when using header rules in Cilium in github.com/cilium/cilium","modified":"2026-02-04T03:17:06.433288Z","packages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":["<1.11.16",">=1.12.0 <1.12.9",">=1.13.0 <1.13.2"],"fixed":["1.11.16","1.12.9","1.13.2"]}]}],"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."]}