CVE-2026-11526

Summary

GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle.

GD::Image::_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. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected.

Any caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID.

Affected Software

VendorProductVersion RangeStatus
RURBANGD0 < 2.86affected

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 2.86, do not pass untrusted input as a pathname to GD::Image constructors. Callers can open the file themselves and pass the resulting filehandle, which bypasses the affected string path.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References