What’s Vulnerable › Vulnerabilities

CVE-2024-28249: Cilium has possible unencrypted traffic between nodes when using IPsec and L7 policies

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-18 · updated 2026-06-17
• Weakness: CWE-311

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.

Affected products

• cilium: before 1.13.13; from 1.14.0 before 1.14.8; from 1.15.0 before 1.15.2 — fixed in 1.13.13, 1.14.8, 1.15.2

How to fix

Upgrade to a fixed version: cilium 1.13.13, 1.14.8, 1.15.2. Check the vendor advisory for mitigations.

References

• https://github.com/cilium/cilium/releases/tag/v1.13.13
• https://github.com/cilium/cilium/releases/tag/v1.14.8
• https://github.com/cilium/cilium/releases/tag/v1.15.2
• https://github.com/cilium/cilium/security/advisories/GHSA-j89h-qrvr-xc36
• https://github.com/cilium/cilium/releases/tag/v1.13.13
• https://github.com/cilium/cilium/releases/tag/v1.14.8
• https://github.com/cilium/cilium/releases/tag/v1.15.2
• https://github.com/cilium/cilium/security/advisories/GHSA-j89h-qrvr-xc36

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