{"answers":{"affected":"10 open source packages ship an affected version, including github.com/cilium/cilium, cilium and cilium-operator. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33726 in the wild and no public exploit code.","fix":"Upgrade github.com/cilium/cilium to a fixed version for your release line: 1.17.14, 1.18.8 or 1.19.2.","what":"CVE-2026-33726 is a medium-severity missing authorization vulnerability in cilium, published on 27 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33726 and fix it if it is affected.\n\nWhat it is: CVE-2026-33726 is a medium-severity missing authorization vulnerability in cilium, published on 27 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-33726 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/cilium/cilium (Go): affected all versions; fixed in 1.17.14, 1.18.8, 1.19.2\n- github.com/cilium/cilium (Go): affected all versions; fixed in 1.17.14\n- github.com/cilium/cilium (Go): affected all versions; fixed in 1.17.14\n- github.com/cilium/cilium (Go): affected from 1.18.0; fixed in 1.18.8\n- github.com/cilium/cilium (Go): affected from 1.18.0; fixed in 1.18.8\n- github.com/cilium/cilium (Go): affected from 1.19.0; fixed in 1.19.2\n- github.com/cilium/cilium (Go): affected from 1.19.0; fixed in 1.19.2\n- cilium (Bitnami): affected all versions; fixed in 1.17.14, 1.18.8, 1.19.2\n- cilium-operator (Bitnami): affected all versions; fixed in 1.17.14, 1.18.8, 1.19.2\n- hubble-relay (Bitnami): affected all versions; fixed in 1.17.14, 1.18.8, 1.19.2\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-33726/ (Markdown: https://insights.sbomify.com/CVE-2026-33726/index.md)","id":"CVE-2026-33726","markdown":"https://insights.sbomify.com/CVE-2026-33726/index.md","name":"CVE-2026-33726","record":{"aliases":["BIT-cilium-2026-33726","BIT-cilium-operator-2026-33726","BIT-hubble-relay-2026-33726","CLEANSTART-2026-ZS52141","GHSA-hxv8-4j4r-cqgv","GO-2026-4856","MINI-2fxp-mqfg-j75x","MINI-3fmx-h7pp-c45f","MINI-3pm6-23qx-r2jg","MINI-574g-6vfj-fcf3","MINI-5vvv-m47m-r2c2","MINI-74x5-pq42-68hg","MINI-99q9-5q5f-5x87","MINI-9c77-2pwh-q3g5","MINI-9jh7-q9f7-5jf6","MINI-c774-9pj9-gfxv","MINI-h7q5-2h6f-f7xm","MINI-j2c5-7pmw-p5f4","MINI-mgvf-5865-2c6c","MINI-mwrv-vmvx-6c5j","MINI-pc9q-9966-g2gm","MINI-phx2-j574-wjxq","MINI-q533-fwjj-mxx7","MINI-r43h-2hc3-qvjv"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Cilium network security","requires_auth":"low_privilege","summary":"Attackers can bypass Kubernetes NetworkPolicy restrictions for same-node traffic in specific Cilium configurations, requiring a patch to restore enforcement.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"cilium","vendor":"cilium"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.17.14, 1.18.8, and 1.19.2, Ingress Network Policies are not enforced for traffic from pods to L7 Services (Envoy, GAMMA) with a local backend on the same node, when Per-Endpoint Routing is enabled and BPF Host Routing is disabled. Per-Endpoint Routing is disabled by default, but is automatically enabled in deployments using cloud IPAM, including Cilium ENI on EKS (`eni.enabled`), AlibabaCloud ENI (`alibabacloud.enabled`), Azure IPAM (`azure.enabled`, but not AKS BYOCNI), and some GKE deployments (`gke.enabled`; managed offerings such as GKE Dataplane V2 may use different defaults). It is typically not enabled in tunneled deployments, and chaining deployments are not affected. In practice, Amazon EKS with Cilium ENI mode is likely the most common affected environment. Versions 1.17.14, 1.18.8, and 1.19.2 contain a patch. There is currently no officially verified or comprehensive workaround for this issue. The only option would be to disable per-endpoint routes, but this will likely cause disruptions to ongoing connections, and potential conflicts if running in cloud providers.","ecosystems":["Bitnami","Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same-node traffic","id":"CVE-2026-33726","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":10,"n_references":6,"next":{"headline":"Pi-hole has a Local Privilege Escalation (post-compromise, pihole -\u003e root).","id":"CVE-2026-33727"},"packages":[{"ecosystem":"Bitnami","fixed":["1.17.14","1.18.8","1.19.2"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"cilium","purl":"pkg:bitnami/cilium","source":"BIT-cilium-2026-33726"},{"ecosystem":"Bitnami","fixed":["1.17.14","1.18.8","1.19.2"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"cilium-operator","purl":"pkg:bitnami/cilium-operator","source":"BIT-cilium-operator-2026-33726"},{"ecosystem":"Bitnami","fixed":["1.17.14","1.18.8","1.19.2"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"hubble-relay","purl":"pkg:bitnami/hubble-relay","source":"BIT-hubble-relay-2026-33726"},{"ecosystem":"Go","fixed":["1.17.14","1.18.8","1.19.2"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GO-2026-4856"},{"ecosystem":"Go","fixed":["1.17.14"],"introduced":["0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":null,"source":"GHSA-hxv8-4j4r-cqgv"},{"ecosystem":"Go","fixed":["1.17.14"],"introduced":["0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GHSA-hxv8-4j4r-cqgv"},{"ecosystem":"Go","fixed":["1.18.8"],"introduced":["1.18.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":null,"source":"GHSA-hxv8-4j4r-cqgv"},{"ecosystem":"Go","fixed":["1.18.8"],"introduced":["1.18.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GHSA-hxv8-4j4r-cqgv"},{"ecosystem":"Go","fixed":["1.19.2"],"introduced":["1.19.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":null,"source":"GHSA-hxv8-4j4r-cqgv"},{"ecosystem":"Go","fixed":["1.19.2"],"introduced":["1.19.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GHSA-hxv8-4j4r-cqgv"}],"prev":{"headline":"Metabase vulnerable to RCE and Arbitrary File Read via H2 JDBC INIT Injection in EE Serialization Import","id":"CVE-2026-33725"},"products":["cilium"],"published":"2026-03-27","related":[{"cvss_score":9.2,"headline":"Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access","id":"CVE-2026-49445","kev_date_added":null,"published":"2026-07-15"},{"cvss_score":8.8,"headline":"Incorrect Default Permissions in Cilium","id":"CVE-2022-29178","kev_date_added":null,"published":"2022-05-20"},{"cvss_score":8,"headline":"Insecure IPsec transport encryption in Cilium","id":"CVE-2024-28860","kev_date_added":null,"published":"2024-03-27"},{"cvss_score":7.9,"headline":"Cillium exposes sensitive information included in the cilium-bugtool debug archive","id":"CVE-2026-41520","kev_date_added":null,"published":"2026-05-08"},{"cvss_score":7.9,"headline":"Cilium leaks sensitive information in cilium-bugtool","id":"CVE-2024-37307","kev_date_added":null,"published":"2024-06-13"},{"cvss_score":7.6,"headline":"Cilium NetworkPolicy bypass via pod labels","id":"CVE-2023-39347","kev_date_added":null,"published":"2023-09-26"},{"cvss_score":7.5,"headline":"Improper Privilege Management in Cilium","id":"CVE-2022-29179","kev_date_added":null,"published":"2022-05-20"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-27","vendors":["cilium"]},"summary":"Attackers can bypass Kubernetes NetworkPolicy restrictions for same-node traffic in specific Cilium configurations, requiring a patch to restore enforcement.","url":"https://insights.sbomify.com/CVE-2026-33726/"}