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TI-2024-18809 Aliases CVE-2024-28250GHSA-v6q2-4qr3-5cw6

Cilium has possible unencrypted traffic between nodes when using WireGuard and L7 policies

Priority LOW 26CWE-311Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-311.

Summary

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.8 and 1.15.2, In Cilium clusters with WireGuard enabled and traffic matching Layer 7 policies Wireguard-eligible traffic that is sent between a node's Envoy proxy and pods on other nodes is sent unencrypted and Wireguard-eligible traffic that is sent between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.14.8 and 1.15.2 in in native routing mode (`routingMode=native`) and in Cilium 1.14.4 in tunneling mode (`routingMode=tunnel`). Not that in tunneling mode, `encryption.wireguard.encapsulate` must be set to `true`. There is no known workaround for this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00172 6th percentileScored 2026-11-07
Fix Fixed cilium (cilium): 1.14.8, 1.15.2github.com/cilium/cilium (Go): 1.14.8, 1.15.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ciliumcilium1.14.0 to before 1.14.8; 1.15.0 to before 1.15.21.14.8, 1.15.2Patch availableCNA
—github.com/cilium/cilium (Go)1.14.0 to before 1.14.81.14.8Patch availableGHSA-v6q2-4qr3-5cw6
—github.com/cilium/cilium (Go)1.15.0 to before 1.15.21.15.2Patch availableGHSA-v6q2-4qr3-5cw6
  • cilium Vendorcilium Affected 1.14.0 to before 1.14.8; 1.15.0 to before 1.15.2 Fixed in 1.14.8, 1.15.2 Patch available CNA
  • github.com/cilium/cilium (Go) Vendor— Affected 1.14.0 to before 1.14.8 Fixed in 1.14.8 Patch available GHSA-v6q2-4qr3-5cw6
  • github.com/cilium/cilium (Go) Vendor— Affected 1.15.0 to before 1.15.2 Fixed in 1.15.2 Patch available GHSA-v6q2-4qr3-5cw6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*1.14.0 to before 1.14.8; 1.15.0 to before 1.15.2Vulnerablecilium
  • cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* Versions 1.14.0 to before 1.14.8; 1.15.0 to before 1.15.2 Vulnerable ·cilium

Remediation

  • Fix · CNA cilium (cilium) Fixed in 1.14.8, 1.15.2
  • Fix · GHSA-v6q2-4qr3-5cw6 github.com/cilium/cilium (Go) Fixed in 1.14.8 Advisory →
  • Fix · GHSA-v6q2-4qr3-5cw6 github.com/cilium/cilium (Go) Fixed in 1.15.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-28250
  2. 2026-10-03 Alias added: GHSA-v6q2-4qr3-5cw6

References

Advisory 2

Other 4

  • TI-2024-32092 CIDR deny policies may not take effect when a more narrow CIDR allow is present CVSS 3.1HIGH 8.7
  • TI-2023-12305 Cilium eBPF filters may be temporarily removed during agent restart CVSS 3.1CRITICAL 9.8
  • TI-2023-20486 Cilium NetworkPolicy bypass via pod labels CVSS 3.1CRITICAL 9.0
  • TI-2022-11721 Incorrect Default Permissions in Cilium CVSS 3.1HIGH 8.8
  • TI-2026-36600 Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access CVSS 3.1CRITICAL 9.2
  • TI-2026-40915 Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces CVSS 3.1HIGH 8.9
See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences