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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 2 LOW 0

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

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Impact type Code execution 0 Privilege escalation 0 Security bypass 0 Information disclosure 0 Tampering 0 Denial of service 2 Spoofing 0 Cross-site scripting 0 SQL injection 0

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Requirements No authentication 2 No user interaction 2

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Weakness (CWE) CWE-415 Double Free 1 CWE-476 NULL Pointer Dereference 1

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Release: Go standard library net 1.25.10, 1.26.3 × Clear all filters

TI-2026-26183 CVE-2026-33811 · GHSA-497x-jcxf-m478

Crash when handling long CNAME response in net

Priority MEDIUM 40

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

CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00875 · Published 2026-05-07 · Partial fix · 1.25.10, 1.26.3 CWE-415

TI-2026-28718 CVE-2026-39836 · GHSA-8g2r-hhvj-mv99

Panic in Dial and LookupPort when handling NUL byte on Windows in net

Priority MEDIUM 40

The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).

CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00633 · Published 2026-05-07 · Partial fix · 1.25.10, 1.26.3 CWE-476

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