Gd-jpeg V1.0 Exploit -

in the header, but the PHP shell is still tucked away inside the image data. The Execution: Maya now needs the server to

No major modern OS ships with libjpeg v1.0. Ubuntu, Debian, RHEL, and Alpine use libjpeg-turbo (v2.0+) or libjpeg v8+. gd-jpeg v1.0 exploit

Maya uses a specialized script to analyze how the GD library's JPEG compression algorithm (v1.0) moves pixels around. She looks for a "dead zone" in the image data—bits that the compression algorithm doesn't change during the transformation. Injecting the Payload: in the header, but the PHP shell is