CVE-2026-39836
High
Description
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
SeverityHigh
CVSS7.5
Exploit probability—
ProductGo
PublishedMay 7, 2026
First seenMay 7, 2026
Weakness typeCWE-248CWE-248
How to fix
Update
- golang go1.25.10, 1.26.3 or later
- stdlib1.25.10, 1.26.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| golang go | v < 1.25.10, 1.26.0 ≤ v < 1.26.3 | 1.25.10, 1.26.3 |
| stdlibGo | v < 1.25.10, 1.26.0-0 ≤ v < 1.26.3 | 1.25.10, 1.26.3 |
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