CVE-2026-11527

Summary

Config::IniFiles versions before 3.001000 for Perl allow OS command injection and file overwrite via a 2-arg open() of the -file argument in _make_filehandle.

Config::IniFiles::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe ("| cmd", "cmd |") or begins with a redirect ("> path", ">> path") is run as a command or redirect rather than opened as a file. The helper is the open path behind the documented -file argument: new(-file => $thing) reaches it through ReadConfig. An in-memory scalar reference (-file => $text) does not open a path and is unaffected.

Any caller that forwards untrusted input to the -file argument can run an arbitrary command or truncate a file under the process UID.

Affected Software

VendorProductVersion RangeStatus
SHLOMIFConfig::IniFiles0 < 3.001000affected

Weaknesses

  • CWE-78: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  • CWE-73: CWE-73 External Control of File Name or Path

Workarounds

For deployments that cannot upgrade to 3.001000, do not pass untrusted input as the -file argument. Callers can open the file themselves and pass the resulting filehandle, or pass the configuration as an in-memory scalar reference, which bypasses the affected string path.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References