NULL pointer dereference in Golang Go
CVE-2026-39836
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
EPSS: 0.000 (5.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Golang Go
- Go Standard Library Net — versions 0, 1.26.0-0
Weakness classification (CWE)
References
- security@golang.org (Issue Tracking)
- security@golang.org (Mailing List, Issue Tracking)
- security@golang.org (Patch)
- security@golang.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-39836?
- CVE-2026-39836 is a high-severity vulnerability in Golang Go, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-07.
- How severe is CVE-2026-39836?
- High severity. CVSS v3 base score is 7.5 out of 10.