Bug 2428009 (CVE-2025-68151) - CVE-2025-68151 github.com/coredns/coredns/core/dnsserver: CoreDNS DoS via unbounded connections and oversized messages
Summary: CVE-2025-68151 github.com/coredns/coredns/core/dnsserver: CoreDNS DoS via unb...
Keywords:
Status: NEW
Alias: CVE-2025-68151
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-08 16:02 UTC by OSIDB Bzimport
Modified: 2026-01-08 17:17 UTC (History)
6 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-01-08 16:02:37 UTC 
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.0, multiple CoreDNS server implementations (gRPC, HTTPS, and HTTP/3) lack critical resource-limiting controls. An unauthenticated remote attacker can exhaust memory and degrade or crash the server by opening many concurrent connections, streams, or sending oversized request bodies. The issue is similar in nature to CVE-2025-47950 (QUIC DoS) but affects additional server types that do not enforce connection limits, stream limits, or message size constraints. Version 1.14.0 contains a patch.
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