CVE-2025-0913
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
ProductGo
PublishedJun 11, 2025
First seenJun 11, 2025
Weakness typeCWE-59Improper link resolution
How to fix
Update
- golang go1.23.10, 1.24.4 or later
- stdlib1.23.10, 1.24.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| golang go | v < 1.23.10, 1.24.0 ≤ v < 1.24.4 | 1.23.10, 1.24.4 |
| stdlibGo | v < 1.23.10, 1.24.0-0 ≤ v < 1.24.4 | 1.23.10, 1.24.4 |
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