{"answers":{"affected":"6 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-2026-26963 in the wild and no public exploit code.","fix":"Upgrade github.com/cilium/cilium to 1.18.6 or later.","what":"CVE-2026-26963 is a medium-severity missing authorization vulnerability in cilium, published on 19 Feb 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-2026-26963 and fix it if it is affected.\n\nWhat it is: CVE-2026-26963 is a medium-severity missing authorization vulnerability in cilium, published on 19 Feb 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-2026-26963 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/cilium/cilium (Go): affected from 1.18.0; fixed in 1.18.6\n- github.com/cilium/cilium (Go): affected from 1.18.0; fixed in 1.18.6\n- github.com/cilium/cilium (Go): affected from 1.18.0; fixed in 1.18.6\n- cilium (Bitnami): affected from 1.18.0; fixed in 1.18.6\n- cilium-operator (Bitnami): affected from 1.18.0; fixed in 1.18.6\n- hubble-relay (Bitnami): affected from 1.18.0; fixed in 1.18.6\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-2026-26963/ (Markdown: https://insights.sbomify.com/CVE-2026-26963/index.md)","id":"CVE-2026-26963","markdown":"https://insights.sbomify.com/CVE-2026-26963/index.md","name":"CVE-2026-26963","record":{"aliases":["BIT-cilium-2026-26963","BIT-cilium-operator-2026-26963","BIT-hubble-relay-2026-26963","GHSA-5r23-prx4-mqg3","GO-2026-4522","MINI-92x6-8jwj-p6mq","MINI-gqcj-9cqm-67g4","MINI-hcf8-hc8p-qw98","MINI-rwxh-rp9m-c6mg","UBUNTU-CVE-2026-26963"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Cilium network security","requires_auth":"none","summary":"Attackers can bypass host firewall policies in Cilium when specific encryption and routing features are enabled, allowing unauthorized cross-node traffic.","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":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Versions 1.18.0 through 1.18.5 will incorrectly permit traffic from Pods on other nodes when Native Routing, WireGuard and Node Encryption are enabled. This issue has been fixed in version 1.18.6.","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 may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled","id":"CVE-2026-26963","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":6,"n_references":4,"next":{"headline":"Windmill Exposes Workspace Slack OAuth Client Secrets to Non-Admin Workspace Members","id":"CVE-2026-26964"},"packages":[{"ecosystem":"Bitnami","fixed":["1.18.6"],"introduced":["1.18.0"],"last_affected":[],"package":"cilium","purl":"pkg:bitnami/cilium","source":"BIT-cilium-2026-26963"},{"ecosystem":"Bitnami","fixed":["1.18.6"],"introduced":["1.18.0"],"last_affected":[],"package":"cilium-operator","purl":"pkg:bitnami/cilium-operator","source":"BIT-cilium-operator-2026-26963"},{"ecosystem":"Bitnami","fixed":["1.18.6"],"introduced":["1.18.0"],"last_affected":[],"package":"hubble-relay","purl":"pkg:bitnami/hubble-relay","source":"BIT-hubble-relay-2026-26963"},{"ecosystem":"Go","fixed":["1.18.6"],"introduced":["1.18.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":null,"source":"GHSA-5r23-prx4-mqg3"},{"ecosystem":"Go","fixed":["1.18.6"],"introduced":["1.18.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GHSA-5r23-prx4-mqg3"},{"ecosystem":"Go","fixed":["1.18.6"],"introduced":["1.18.0"],"last_affected":[],"package":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","source":"GO-2026-4522"}],"prev":{"headline":"Rack: Header injection in multipart requests","id":"CVE-2026-26962"},"products":["cilium"],"published":"2026-02-19","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":"2026-02-20","vendors":["cilium"]},"summary":"Attackers can bypass host firewall policies in Cilium when specific encryption and routing features are enabled, allowing unauthorized cross-node traffic.","url":"https://insights.sbomify.com/CVE-2026-26963/"}