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    CVE-2026-26018 CoreDNS Loop Vulnerability: Patch Guidance for Kubernetes

    CoreDNS has been assigned CVE-2026-26018 — a high-severity denial-of-service vulnerability in the loop plugin that can be triggered remotely by an attacker who can send carefully crafted DNS queries and (under realistic cluster conditions) crash the CoreDNS process, with wide-reaching...
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    • Forum: Security Alerts
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    CoreDNS CVE-2026-26017 TOCTOU: Patch Plugin Order to Stop Segmentation Bypass

    CoreDNS's latest security advisory reveals a deceptively simple logic bug that can let DNS access controls be sidestepped — a Time-of-Check Time-of-Use (TOCTOU) ordering flaw now tracked as CVE-2026-26017 — and while the fix landed quickly in CoreDNS 1.14.2, this vulnerability exposes hardened...
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    • coredns kubernetes dns plugin ordering toctou vulnerability
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    • Forum: Security Alerts
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    CVE-2024-0874 CoreDNS CD Bit Cache Bug: Risks in Azure Linux and AKS

    CoreDNS’s CVE-2024-0874 — a caching bug that can cause responses fetched with the DNS CD (Checking Disabled) flag to be stored and later served to queries missing that flag — is a real, practical risk for any environment that runs CoreDNS. The vulnerability was disclosed upstream in April 2024...
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