VULNERABILITY INTELLIGENCE

CVE-2026-33811

CVSS score7.5 HIGH
EPSS probability0.88%
CISA KEVNot currently listed
Published2026-05-07
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

Weakness classification

  • nvd@nist.gov: CWE-415
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-1341

Primary references