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.
Metrics
Affected Vendors & Products
References
History
Mon, 09 Mar 2026 10:15:00 +0000
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Coredns.io
Coredns.io coredns |
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Coredns.io
Coredns.io coredns |
Sat, 07 Mar 2026 00:15:00 +0000
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| Weaknesses | CWE-1241 | |
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threat_severity
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threat_severity
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Fri, 06 Mar 2026 17:15:00 +0000
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ssvc
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Fri, 06 Mar 2026 15:45:00 +0000
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| Description | 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. | |
| Title | CoreDNS Loop Detection Denial of Service Vulnerability | |
| Weaknesses | CWE-337 CWE-400 CWE-770 |
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| References |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-03-06T15:35:50.801Z
Updated: 2026-03-06T16:07:31.587Z
Reserved: 2026-02-09T21:36:29.554Z
Link: CVE-2026-26018
Updated: 2026-03-06T16:07:26.703Z
Status : Awaiting Analysis
Published: 2026-03-06T16:16:10.557
Modified: 2026-03-09T13:35:34.633
Link: CVE-2026-26018