HIGHCVE-2026-33811Published Modified CNA Go
CVE-2026-33811: Crash when handling long CNAME response in net
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Metrics
- CVSS v3.1
- 7.5
- Severity
- HIGH
- Fixed in
- 1.25.10
- Affected Products
- 1
Fix available
1.25.101.26.3
Affected packages
- Go standard library / net< 1.25.10 (from 0) · < 1.26.3 (from 1.26.0-0)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HReferences