What’s Vulnerable › Vulnerabilities

CVE-2024-28248: Cilium intermittent HTTP policy bypass

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% 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-693

Description

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.13.9 and prior to versions 1.13.13, 1.14.8, and 1.15.2, Cilium's HTTP policies are not consistently applied to all traffic in the scope of the policies, leading to HTTP traffic being incorrectly and intermittently forwarded when it should be dropped. This issue has been patched in Cilium 1.15.2, 1.14.8, and 1.13.13. There are no known workarounds for this issue.

Affected products

• cilium: from 1.13.9 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://docs.cilium.io/en/stable/security/policy/language/#http
• 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-68mj-9pjq-mc85
• https://docs.cilium.io/en/stable/security/policy/language/#http
• 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-68mj-9pjq-mc85

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