Search/CVE-2026-33811
● CVE — High

CVE-2026-33811

VendorgolangProductgoDiscoveredMay 7, 2026UpdatedOct 26, 2026

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

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CVSS v3.1
7.5 HIGH
EPSS
0.88%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 14, 2026 → Oct 26, 2026
▲ 0.06pp
0.81% → 0.88% over 4 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Connections
3 relationships
Timeline
disclosure → media coverage
May 7, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026