CoreDNS Blog

This release adds the new proxyproto plugin to support Proxy Protocol and preserve client IPs behind load balancers. It also includes enhancements such as improved DNS logging metadata and stronger randomness for loop detection (CVE-2026-26018), along with several bug fixes including TLS+IPv6 forwarding, improved CNAME handling and rewriting, allowing jitter disabling, prevention of an ACL bypass (CVE-2026-26017), and a Kubernetes plugin crash fix. In addition, the release updates the build to Go 1.

This release primarily addresses security vulnerabilities affecting Go versions prior to Go 1.25.6 and Go 1.24.12 (CVE-2025-61728, CVE-2025-61726, CVE-2025-68121, CVE-2025-61731, CVE-2025-68119). It also includes performance improvements to the proxy plugin via multiplexed connections, along with various documentation updates. Brought to You By Alex Massy Shiv Tyagi Ville Vesilehto Yong Tang Noteworthy Changes plugin/proxy: Use mutex-based connection pool (https://github.com/coredns/coredns/pull/7790)

This release primarily addresses security vulnerabilities affecting Go versions prior to Go 1.25.6 and Go 1.24.12 (CVE-2025-61728, CVE-2025-61726, CVE-2025-68121, CVE-2025-61731, CVE-2025-68119). It also includes performance improvements to the proxy plugin via multiplexed connections, along with various documentation updates. Brought to You By Alex Massy Shiv Tyagi Ville Vesilehto Yong Tang Noteworthy Changes plugin/proxy: Use mutex-based connection pool (https://github.com/coredns/coredns/pull/7790)

This release focuses on security hardening and operational reliability. Core updates introduce a regex length limit to reduce resource-exhaustion risk. Plugin updates improve error consolidation (show_first), reduce misleading SOA warnings, add Kubernetes API rate limiting, enhance metrics with plugin chain tracking, and fix issues in azure and sign. This release also includes additional security fixes; see the security advisory for details. Brought to You By cangming pasteley Raisa Kabir Ross Golder rusttech Syed Azeez Ville Vesilehto Yong Tang