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.
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History
Fri, 06 Mar 2026 17:15:00 +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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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
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 : Received
Published: 2026-03-06T16:16:10.557
Modified: 2026-03-06T16:16:10.557
Link: CVE-2026-26018
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OpenCVE Enrichment
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