CVE-2026-73639

Imager::File::PNG versions from 1.003 before 1.004 for Perl write past the end of the row buffer reading a PNG with a tRNS transparency chunk in readdirect8. With a tRNS chunk, readdirect8 adds an alpha channel to the image it creates but still sizes the row buffer from the original channel count...

EUVD-2026-82492

Imager::File::PNG versions from 1.003 before 1.004 for Perl write past the end of the row buffer reading a PNG with a tRNS transparency chunk in readdirect8. With a tRNS chunk, readdirect8 adds an alpha channel to the image it creates but still sizes the row buffer from the original channel count...

CVE-2026-73639 Imager::File::PNG versions from 1.003 before 1.004 for Perl write past the end of the row buffer reading a PNG with a tRNS transparency chunk in read_direct8

Imager::File::PNG versions from 1.003 before 1.004 for Perl write past the end of the row buffer reading a PNG with a tRNS transparency chunk in readdirect8. With a tRNS chunk, readdirect8 adds an alpha channel to the image it creates but still sizes the row buffer from the original channel count...

CVE-2026-73639

Imager::File::PNG versions from 1.003 before 1.004 (a Perl module also bundled in the Imager distribution) contain a heap buffer overflow in read_direct8(). When reading a PNG with a tRNS transparency chunk , the function adds an alpha channel to the image but sizes the row buffer from the origin...