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CoreDNS DoH GET oversized dns= query parameter causes pre-validation CPU and memory amplification

🗓️ 28 Apr 2026 22:43:47Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

Oversized dns= in CoreDNS DoH GET causes CPU and memory amplification due to pre-validation parsing.

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08 May 2026 15:28Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
CVSS 48.7
EPSS0.00039
SSVC
4