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OpenJPEG advisories

The JPEG 2000 codec, bundled inside Pillow's wheels and used by poppler for JPEG 2000 streams inside PDFs

6 advisories recorded for OpenJPEG (openjpeg2 on Debian); the project is at https://github.com/uclouvain/openjpeg. Newest first.

PublishedAdvisoryReaches youWhat sillybos does
OpenJPEG's wavelet encoder reads and writes out of bounds CVE-2026-107080on a save pathNot reached by opening a file
OpenJPEG's encoder overflows an integer in opj_pi_initialise_encode CVE-2026-6192on a save pathNot reached by opening a file
OpenJPEG dereferences a null pointer in the wavelet transform CVE-2025-50952by opening a fileRefused by default
A short JP2 stream makes OpenJPEG write out of bounds in opj_jp2_read_header CVE-2025-54874by opening a fileRefused by default
opj_decompress overruns a heap buffer with certain options (second report) CVE-2024-56827through a command-line toolNot reached by opening a file
opj_decompress overruns a heap buffer with certain options CVE-2024-56826through a command-line toolNot reached by opening a file

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