Nixpkgs security tracker
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CVE-2026-26018
7.5 HIGH
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): HIGH
CoreDNS Loop Detection Denial of Service Vulnerability
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.
References
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https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278 x_refsource_CONFIRM
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https://github.com/coredns/coredns/releases/tag/v1.14.2 x_refsource_MISC
Affected products
coredns
- ==< 1.14.2
Package maintainers
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@DeltaEvo Duarte David <deltaduartedavid@gmail.com>
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@rtreffer Rene Treffer <treffer+nixos@measite.de>
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@rushmorem Rushmore Mushambi <rushmore@webenchanter.com>