CVE-2025-0913

Summary

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 Software

VendorProductVersion RangeStatus
Go standard librarysyscall0 < 1.23.10affected
Go standard librarysyscall1.24.0-0 < 1.24.4affected
Go standard libraryos0 < 1.23.10affected
Go standard libraryos1.24.0-0 < 1.24.4affected

Weaknesses

  • CWE-59: Improper Link Resolution Before File Access ('Link Following')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References