CVE-2025-0913
MEDIUM5.5EPSS 0.04%Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall
Published: 6/11/2025Modified: 2/4/2026
Description
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 packages (2)
- Bitnami/golangfrom 0, < 1.23.10, >= 1.24.0-0, < 1.24.4
- Go/stdlibfrom 0, < 1.23.10, >= 1.24.0-0, < 1.24.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |