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    CVE-2026-26018

    CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

    Published:Mar 6, 2026
    Last Modified:Apr 16, 2026
    EPS:Mar 6, 2026
    EPSS Score:0.00057
    CVSS Score:7.5

    Affected Products

    Vendor
    Coredns.io
    Product
    Coredns

    Exploits

    https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278

    Related CVEs

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    CVE-2026-62994 (CVSS 3.7) — CoreDNS is a DNS server written in Go. From 1.9.4 until 1.14.5, a network DNS client allowed to request AXFR f…
    CVE-2026-35579 (CVSS 8.2) — CoreDNS is a DNS server written in Go. In versions prior to 1.14.3, the gRPC, QUIC, DoH, and DoH3 transport im…
    CVE-2026-33489 (CVSS 8.2) — CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select the w…
    CVE-2026-32936 (CVSS 8.7) — CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the DNS-over-HTTPS (DoH) GET path ac…
    CVE-2026-32934 (CVSS 8.7) — CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the DNS-over-QUIC (DoQ) server can b…
    CVE-2026-33190 (CVSS 8.7) — CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the tsig plugin can be bypassed on n…
    CVE-2026-26017 (CVSS 7.7) — CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allow…
    CVE-2025-68151 (CVSS 6.6) — CoreDNS is a DNS server that chains plugins. Prior to version 1.14.0, multiple CoreDNS server implementations …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High