CVE-2026-33811
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
- Published May 7, 2026
- CVSS 7.5 high
- 0.8% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
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