CVE-2025-0913: Golang Go

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.

Affected products

• Golang Go: before 1.23.10 (fixed in 1.23.10); from 1.24.0, before 1.24.4 (fixed in 1.24.4)

Published 2025-06-11. Last modified 2026-06-17.