CVE-2026-56742
Fixed in a distro release EPSS <1%CVSS 5.9
Cilium is a networking, observability, and security solution. Prior to 1.17.17, 1.18.11, and 1.19.5, Cilium clusters using Gateway API allow users with permissions to create or update namespaced HTTPRoutes to mirror HTTP traffic to any Service in any namespace, bypassing the ReferenceGrant authorization mechanism. Gateway API functionality is disabled by default. This issue is fixed in versions 1.17.17, 1.18.11, and 1.19.5.
Products: cilium
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/cilium/cilium | 1.17.17 |
| Go | github.com/cilium/cilium | 1.19.5 |
| Go | github.com/cilium/cilium | 1.18.11 |
| Go | github.com/cilium/ciliumCilium | 1.18.11 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | cilium-1.16 | no fix |
| Chainguard | cilium-1.16-clustermesh-apiserver | no fix |
| Chainguard | cilium-1.16-hubble-relay | no fix |
| Chainguard | cilium-1.16-operator-aws | no fix |
| Chainguard | cilium-1.16-operator-generic | no fix |
| Chainguard | cilium-1.19-operator-generic | no fix |
| Chainguard | cilium-fips-1.16 | no fix |
| Chainguard | cilium-fips-1.16-clustermesh-apiserver | no fix |
| Chainguard | cilium-fips-1.16-host-utils | no fix |
| Chainguard | cilium-fips-1.16-hubble-relay | no fix |
| Chainguard | cilium-fips-1.16-operator-aws | no fix |
| Chainguard | cilium-fips-1.16-operator-azure | no fix |
| Chainguard | cilium-fips-1.16-operator-generic | no fix |
| Chainguard | hubble | 1.19.4-r6 |
| Chainguard | hubble-fips | 1.19.4-r6 |
| Chainguard | hubble-ui-backend | 0.13.5-r11 |
| Chainguard | hubble-ui-backend-fips | 0.13.5-r11 |
| Chainguard | kubescape | 4.0.10-r8 |
| Chainguard | kubescape-operator | 0.2.172-r2 |
| Chainguard | kubescape-operator | 0.2.151-r7 |
| Chainguard | kubescape-operator-fips | 0.2.151-r9 |
| Chainguard | kubescape-server | 4.0.10-r8 |
| Chainguard | kubescape-server-downloader | 4.0.10-r8 |
| Chainguard | kubescape-server-fips | 4.0.10-r9 |
| Chainguard | kubescape-server-fips-downloader | 4.0.10-r9 |
| Wolfi | cilium-1.19-operator-generic | no fix |
| Wolfi | hubble | 1.19.4-r6 |
| Wolfi | hubble-ui-backend | 0.13.5-r11 |
| Wolfi | kubescape | 4.0.10-r8 |
| Wolfi | kubescape-operator | 0.2.151-r7 |
| Wolfi | kubescape-operator | 0.2.172-r2 |