CVE-2026-11526 – 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

CVE ID :CVE-2026-11526

Published : June 14, 2026, 12:16 p.m. | 2 hours, 41 minutes ago

Description :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.

Severity: 0.0 | NA

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