{"id":"CVE-2024-28249","aliases":["BIT-cilium-2024-28249","BIT-cilium-operator-2024-28249","BIT-cilium-proxy-2024-28249","BIT-hubble-2024-28249","BIT-hubble-relay-2024-28249","BIT-hubble-ui-2024-28249","BIT-hubble-ui-backend-2024-28249","EUVD-2024-0947","GHSA-j89h-qrvr-xc36","GO-2024-2656"],"status":"published","title":"Cilium has possible unencrypted traffic between nodes when using IPsec and L7 policies","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00271,"percentile":0.19418,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-311","CWE-319"],"published":"2024-03-18T20:30:41Z","modified":"2026-10-28T02:31:14Z","fixes":[{"ecosystem":"Go","package":"github.com/cilium/cilium","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"cilium","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"cilium-operator","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"cilium-proxy","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"hubble","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"hubble-relay","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"hubble-ui","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"hubble-ui-backend","fixed_in":["1.13.13","1.14.8","1.15.2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/cilium/cilium","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.13"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/cilium/cilium","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.14.0"},{"fixed":"1.14.8"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/cilium/cilium","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"cilium","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"cilium-operator","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"cilium-proxy","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"hubble","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"hubble-relay","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"hubble-ui","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"hubble-ui-backend","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"introduced":"1.14.0"},{"fixed":"1.14.8"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"},{"introduced":"1.14.0"},{"fixed":"1.14.8"},{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}]}],"products":[{"vendor":"cilium","product":"cilium"}],"references":[{"url":"https://github.com/cilium/cilium/security/advisories/GHSA-j89h-qrvr-xc36","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","web","advisory"]},{"url":"https://github.com/cilium/cilium/releases/tag/v1.13.13","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://github.com/cilium/cilium/releases/tag/v1.14.8","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://github.com/cilium/cilium/releases/tag/v1.15.2","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-28249","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j89h-qrvr-xc36"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/28xxx/CVE-2024-28249.json","tags":["advisory"]},{"url":"https://github.com/cilium/cilium","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-28249","title":"Cilium has possible unencrypted traffic between nodes when using IPsec and L7 policies","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-03-18T21:36:10.51Z","modified":"2024-08-02T00:48:49.66Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-311"],"updated_at":"2026-11-02T14:34:18.951288Z"}],"euvd":[{"id":"EUVD-2024-0947","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-03-18T21:36:10Z","modified":"2024-08-02T00:48:49Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:26.752963Z"}],"ghsa":[{"id":"GHSA-j89h-qrvr-xc36","title":"Unencrypted traffic between nodes when using IPsec and L7 policies","description":"### Impact\n\nIn Cilium clusters with IPsec enabled and traffic matching Layer 7 policies:\n\n- Traffic that should be IPsec-encrypted between a node's Envoy proxy and pods on other nodes is sent unencrypted\n- Traffic that should be IPsec-encrypted between a node's DNS proxy and pods on other nodes is sent unencrypted\n\n**Note:** For clusters running in native routing mode, IPsec encryption is not applied to connections which are selected by a L7 Egress Network Policy or a DNS Policy. This is a known limitation of Cilium's IPsec encryption which will continue to apply after upgrading to the latest Cilium versions described below.\n\n### Patches\n\nThis issue affects: \n\n- Cilium v1.15 before v1.15.2\n- Cilium v1.14 before v1.14.8\n- Cilium v1.13 before v1.13.13\n- Cilium v1.4 to v1.12 inclusive\n\nThis issue has been resolved in:\n\n- Cilium v1.15.2\n-  Cilium v1.14.8\n-  Cilium v1.13.13\n\n### Workarounds\nThere is no workaround to this issue.\n\n### Acknowledgements\nThe Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @jschwinger233, @julianwiedmann, @giorio94, and @jrajahalme for their work in triaging and resolving this issue.   \n\n### For more information\nIf you have any questions or comments about this advisory, please reach out on [Slack](https://docs.cilium.io/en/latest/community/community/#slack).\n\nIf you think you have found a vulnerability in Cilium, we strongly encourage you to report it to our private security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list that only members of the Cilium internal security team are subscribed to, and your report will be treated as top priority.","status":"published","published":"2024-03-18T20:30:41Z","modified":"2025-01-09T18:52:37Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-311","CWE-319"],"updated_at":"2026-11-02T14:38:27.067633Z"}],"nvd":[{"id":"CVE-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-03-18T22:15:08.503Z","modified":"2026-06-17T07:21:15.777Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-311","CWE-319"],"updated_at":"2026-11-02T14:09:41.654534Z"}],"osv":[{"id":"CVE-2024-28249","title":"Cilium has possible unencrypted traffic between nodes when using IPsec and L7 policies","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-03-18T21:36:10.51Z","modified":"2026-10-28T02:31:14.312664751Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-311"],"updated_at":"2026-11-02T15:44:39.569658Z"},{"id":"GHSA-j89h-qrvr-xc36","title":"Unencrypted traffic between nodes when using IPsec and L7 policies","description":"### Impact\n\nIn Cilium clusters with IPsec enabled and traffic matching Layer 7 policies:\n\n- Traffic that should be IPsec-encrypted between a node's Envoy proxy and pods on other nodes is sent unencrypted\n- Traffic that should be IPsec-encrypted between a node's DNS proxy and pods on other nodes is sent unencrypted\n\n**Note:** For clusters running in native routing mode, IPsec encryption is not applied to connections which are selected by a L7 Egress Network Policy or a DNS Policy. This is a known limitation of Cilium's IPsec encryption which will continue to apply after upgrading to the latest Cilium versions described below.\n\n### Patches\n\nThis issue affects: \n\n- Cilium v1.15 before v1.15.2\n- Cilium v1.14 before v1.14.8\n- Cilium v1.13 before v1.13.13\n- Cilium v1.4 to v1.12 inclusive\n\nThis issue has been resolved in:\n\n- Cilium v1.15.2\n-  Cilium v1.14.8\n-  Cilium v1.13.13\n\n### Workarounds\nThere is no workaround to this issue.\n\n### Acknowledgements\nThe Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @jschwinger233, @julianwiedmann, @giorio94, and @jrajahalme for their work in triaging and resolving this issue.   \n\n### For more information\nIf you have any questions or comments about this advisory, please reach out on [Slack](https://docs.cilium.io/en/latest/community/community/#slack).\n\nIf you think you have found a vulnerability in Cilium, we strongly encourage you to report it to our private security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list that only members of the Cilium internal security team are subscribed to, and your report will be treated as top priority.","status":"published","published":"2024-03-18T20:30:41Z","modified":"2026-09-10T03:50:10.563954422Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-311","CWE-319"],"updated_at":"2026-11-02T15:46:50.336262Z"},{"id":"BIT-cilium-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-05-15T12:05:30.883Z","modified":"2025-03-31T16:04:26.262085Z","updated_at":"2026-11-02T15:28:28.70813Z"},{"id":"BIT-cilium-operator-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-05-15T12:05:28.977Z","modified":"2025-03-31T16:04:26.262085Z","updated_at":"2026-11-02T15:28:28.70813Z"},{"id":"BIT-cilium-proxy-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-07-01T11:10:49.497Z","modified":"2025-03-31T16:04:26.262085Z","updated_at":"2026-11-02T15:28:28.70813Z"},{"id":"BIT-hubble-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-06-04T09:42:49.805Z","modified":"2025-03-31T16:04:26.262085Z","updated_at":"2026-11-02T15:28:31.02759Z"},{"id":"BIT-hubble-relay-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-05-24T19:20:54.285Z","modified":"2025-03-31T16:04:26.262085Z","updated_at":"2026-11-02T15:28:31.02759Z"},{"id":"BIT-hubble-ui-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-07-01T11:15:41.705Z","modified":"2025-03-31T16:04:26.262085Z","updated_at":"2026-11-02T15:28:31.02759Z"},{"id":"BIT-hubble-ui-backend-2024-28249","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.","status":"published","published":"2024-07-01T11:15:38.494Z","modified":"2025-03-31T16:04:26.262085Z","updated_at":"2026-11-02T15:28:31.02759Z"},{"id":"GO-2024-2656","title":"Unencrypted traffic between nodes with IPsec in github.com/cilium/cilium","description":"In Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, traffic that should be IPsec-encrypted between a node's Envoy proxy and pods on other nodes is sent unencrypted, and traffic that should be IPsec-encrypted between a node's DNS proxy and pods on other nodes is sent unencrypted.","status":"published","published":"2024-03-22T18:39:28Z","modified":"2026-02-04T03:34:27.842721Z","updated_at":"2026-11-02T15:47:01.453823Z"}]}}