CVE-2026-26017
Fixed in a distro release EPSS <1%CVSS 7.7
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allows DNS access controls to be bypassed due to the default execution order of plugins. Security plugins such as acl are evaluated before the rewrite plugin, resulting in a Time-of-Check Time-of-Use (TOCTOU) flaw. This issue has been patched in version 1.14.2.
Products: coredns, Red Hat Advanced Cluster Management for Kubernetes 2.13, Red Hat Advanced Cluster Management for Kubernetes 2.14, Red Hat Advanced Cluster Management for Kubernetes 2.15, Red Hat Connectivity Link 1, Red Hat OpenShift Container Platform 4
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/coredns/coredns | 1.14.2 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | coredns-1.12 | no fix |
| Chainguard | coredns-1.13 | no fix |
| Chainguard | coredns-fips-1.13 | no fix |
| Chainguard | eks-distro-coredns-1.29 | no fix |
| Chainguard | eks-distro-coredns-1.30 | no fix |
| Chainguard | eks-distro-coredns-1.31 | 1.31.43-r2 |
| Chainguard | eks-distro-coredns-1.32 | 1.32.35-r1 |
| Chainguard | eks-distro-coredns-1.33 | 1.33.25-r1 |
| Chainguard | eks-distro-coredns-1.34 | 1.34.17-r2 |
| Chainguard | eks-distro-coredns-1.35 | 1.35.7-r1 |
| Chainguard | eks-distro-coredns-fips-1.29 | no fix |
| Chainguard | eks-distro-coredns-fips-1.30 | no fix |
| Chainguard | eks-distro-coredns-fips-1.31 | 1.31.43-r2 |
| Chainguard | eks-distro-coredns-fips-1.32 | 1.32.35-r1 |
| Chainguard | eks-distro-coredns-fips-1.33 | 1.33.25-r1 |
| Chainguard | eks-distro-coredns-fips-1.34 | 1.34.17-r2 |
| Chainguard | eks-distro-coredns-fips-1.35 | 1.35.7-r1 |
| Chainguard | juicefs-1.2 | 1.2.5-r7 |
| Chainguard | juicefs-1.3 | 1.3.1-r8 |
| Chainguard | k8s_gateway | 1.6.4-r2 |
| Chainguard | k8s_gateway-fips | 1.6.4-r3 |
| Chainguard | kubernetes-dns-node-cache | 1.26.7-r9 |
| Chainguard | kubernetes-dns-node-cache-fips | 1.26.7-r11 |
| Chainguard | kuma-coredns-1.12 | no fix |
| Chainguard | kuma-coredns-1.13 | no fix |
| Wolfi | coredns-1.13 | no fix |
| Wolfi | juicefs-1.3 | 1.3.1-r8 |
| Wolfi | k8s_gateway | 1.6.4-r2 |
| Wolfi | kubernetes-dns-node-cache | 1.26.7-r9 |
| Wolfi | kuma-coredns-1.13 | no fix |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20260317T205859-150000.1.152.1 |
| openSUSE Leap 16.0 | coredns | 1.14.2-bp160.1.1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 |
| openSUSE Tumbleweed | coredns | 1.14.2-1.1 |