CVE-2026-11526
CriticalCVSS 9.8Exploitation Probability (EPSS)
High risk82th percentile — higher than 82% of all known CVEs
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. A filename that begins or ends with a pipe or starts with a redirect can lead to command execution instead of file opening.
Risk Assessment
Organizations may be exposed to arbitrary command execution or file truncation, potentially leading to data loss or system security breaches.
Recommendation
It is recommended to upgrade to GD version 2.86 or later and to avoid passing untrusted input to filename-accepting constructors.
Original NVD description (English source)
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.