{"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-2026-56742 in the wild and no public exploit code.","fix":"Upgrade github.com/cilium/cilium to a fixed version for your release line: 1.17.17, 1.18.11 or 1.19.5.","what":"CVE-2026-56742 is a medium-severity missing authorization vulnerability in cilium, published on 15 Jul 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-2026-56742 and fix it if it is affected.\n\nWhat it is: CVE-2026-56742 is a medium-severity missing authorization vulnerability in cilium, published on 15 Jul 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-2026-56742 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 1.17.17, 1.18.11, 1.19.5\n- github.com/cilium/cilium (Go): affected all versions; fixed in 1.17.17\n- github.com/cilium/cilium (Go): affected all versions; fixed in 1.17.17\n- github.com/cilium/cilium (Go): affected from 1.19.0; fixed in 1.19.5\n- github.com/cilium/cilium (Go): affected from 1.19.0; fixed in 1.19.5\n- cilium (Bitnami): affected all versions; fixed in 1.17.17, 1.18.11, 1.19.5\n- cilium-operator (Bitnami): affected all versions; fixed in 1.17.17, 1.18.11, 1.19.5\n- hubble-relay (Bitnami): affected all versions; fixed in 1.17.17, 1.18.11, 1.19.5\n- github.com/cilium/ciliumCilium (Go): affected from 1.18.0; fixed in 1.18.11\n- github.com/cilium/ciliumCilium (Go): affected from 1.18.0; fixed in 1.18.11\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-2026-56742/ (Markdown: https://insights.sbomify.com/CVE-2026-56742/index.md)","id":"CVE-2026-56742","markdown":"https://insights.sbomify.com/CVE-2026-56742/index.md","name":"CVE-2026-56742","record":{"aliases":["BIT-cilium-2026-56742","BIT-cilium-operator-2026-56742","BIT-hubble-relay-2026-56742","GHSA-w7c2-w76w-5hmj","GO-2026-6596","MINI-44cf-6rxq-c8rp","MINI-463m-wq76-cr88","MINI-47vx-53gv-f3j8","MINI-4934-vg7x-mqc2","MINI-4x74-m24x-hm5c","MINI-57cf-2mw3-x38j","MINI-5h74-qrv6-8534","MINI-7qxc-g2qf-vw5r","MINI-853f-xfjw-q8q6","MINI-85xw-9w49-6595","MINI-8xh8-mm9h-6qmw","MINI-9233-f4pj-rc62","MINI-9v23-vpqw-hmrg","MINI-f5rp-f9w5-hm92","MINI-ghwv-pvxr-m8vr","MINI-hv5w-c8q6-h8vr","MINI-j7fv-jq3c-f7v9","MINI-jw4r-jjhf-j2mq","MINI-m25j-667f-6j72","MINI-mcph-4939-xp4q","MINI-pvvj-5pvr-h23w","MINI-qrpf-w74v-pq5f","MINI-qx66-76q7-pxx2","MINI-v9v7-q3c7-v8jj","MINI-vh69-94r5-wh5m","MINI-vmq8-88rw-f3q8","MINI-xm44-88c3-wj53","MINI-xpxh-9xv9-r39g"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Cilium networking","requires_auth":"high_privilege","summary":"Attackers with HTTPRoute permissions can bypass ReferenceGrant to mirror traffic to services in other namespaces, exposing sensitive data.","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":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Cilium is a networking, observability, and security solution. Prior to 1.17.17, 1.18.11, and 1.19.5, Cilium clusters using Gateway API allow users with permissions to create or update namespaced HTTPRoutes to mirror HTTP traffic to any Service in any namespace, bypassing the ReferenceGrant authorization mechanism. Gateway API functionality is disabled by default. This issue is fixed in versions 1.17.17, 1.18.11, and 1.19.5.","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: Namespaced HTTPRoutes can redirect traffic to other namespaces","id":"CVE-2026-56742","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":10,"n_references":8,"next":{"headline":"Cilium may unexpectedly allow ingress traffic from the local namespace when a Kubernetes NetworkPolicy is configured with an ipBlock match","id":"CVE-2026-56743"},"packages":[{"ecosystem":"Bitnami","fixed":["1.17.17","1.18.11","1.19.5"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"cilium","purl":"pkg:bitnami/cilium","source":"BIT-cilium-2026-56742"},{"ecosystem":"Bitnami","fixed":["1.17.17","1.18.11","1.19.5"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"cilium-operator","purl":"pkg:bitnami/cilium-operator","source":"BIT-cilium-operator-2026-56742"},{"ecosystem":"Bitnami","fixed":["1.17.17","1.18.11","1.19.5"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"hubble-relay","purl":"pkg:bitnami/hubble-relay","source":"BIT-hubble-relay-2026-56742"},{"ecosystem":"Go","fixed":["1.17.17","1.18.11","1.19.5"],"introduced":["0","1.18.0","1.19.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GO-2026-6596"},{"ecosystem":"Go","fixed":["1.17.17"],"introduced":["0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":null,"source":"GHSA-w7c2-w76w-5hmj"},{"ecosystem":"Go","fixed":["1.17.17"],"introduced":["0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GHSA-w7c2-w76w-5hmj"},{"ecosystem":"Go","fixed":["1.19.5"],"introduced":["1.19.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":null,"source":"GHSA-w7c2-w76w-5hmj"},{"ecosystem":"Go","fixed":["1.19.5"],"introduced":["1.19.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GHSA-w7c2-w76w-5hmj"},{"ecosystem":"Go","fixed":["1.18.11"],"introduced":["1.18.0"],"last_affected":[],"package":"github.com/cilium/ciliumCilium","purl":null,"source":"GHSA-w7c2-w76w-5hmj"},{"ecosystem":"Go","fixed":["1.18.11"],"introduced":["1.18.0"],"last_affected":[],"package":"github.com/cilium/ciliumCilium","purl":"pkg:golang/github.com/cilium/ciliumCilium","source":"GHSA-w7c2-w76w-5hmj"}],"prev":{"headline":"JLine: Unauthenticated Remote DoS via Unbounded Telnet NAWS Terminal Geometry","id":"CVE-2026-56741"},"products":["cilium"],"published":"2026-07-15","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":"2026-07-16","vendors":["cilium"]},"summary":"Attackers with HTTPRoute permissions can bypass ReferenceGrant to mirror traffic to services in other namespaces, exposing sensitive data.","url":"https://insights.sbomify.com/CVE-2026-56742/"}