NotEnough

Huffman table hacking tool This tool calculates tricky canonical huffman histogram, which is able to trigger OOB Out Of Band write for vulnerable libwebp library i.e. libwebp = 1.3.1. This vulnerability is known as CVE-2023-4863 or CVE-2023-41064. We can overflow the pre-allocated huffman table b...

CVE-2026-55586

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

EUVD-2026-63469

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

CVE-2026-55586 SumatraPDF: Heap out-of-bounds write in vendored CHMLib LZX Huffman table construction reachable from crafted CHM files

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

CVE-2026-55586 SumatraPDF: Heap out-of-bounds write in vendored CHMLib LZX Huffman table construction reachable from crafted CHM files

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

EUVD-2026-63345

A heap out-of-bounds write exists in the Photo CD PCD decoder of GraphicsMagick. In DecodeImage coders/pcd.c, the Huffman delta loop advances its output pointer with q++ after every decoded delta and never checks it against the end of the heap-allocated luma/chroma plane buffers. The pointer is...

PT-2026-79059

Name of the Vulnerable Software and Affected Versions SumatraPDF versions prior to 3.6.2 Description A crafted CHM file can provide malformed LZX Huffman code lengths to the make decode table function in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes via next...

CVE-2026-46603

VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion...

UBUNTU-CVE-2026-46603

VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion...

EUVD-2026-58720

VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion...

CVE-2026-46603

CVE-2026-46603: VP8L decoding in golang.org/x/image/vp8l can allocate excessive memory when processing crafted VP8L images with many unused Huffman tree groups, enabling remote DoS via memory exhaustion. Affected component is golang.org/x/image/vp8l; the root cause is memory allocation growth dur...

CVE-2026-46603 Excessive memory allocation during VP8L decoding in golang.org/x/image

VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion...

PT-2026-72054

VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion...

Astra Linux – Vulnerability in gst-plugins-bad1.0

GStreamer JPEG Parser Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability, but the attack vectors may va...

Astra Linux – Vulnerability in imagemagick

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, ImageMagick lacked proper boundary checking when processing Huffman-coded data from PCD Photo CD files. The decoder contains a function with incorrect...

Debian dla-4704 : libraw-bin - security update

The remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4704 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4704-1 [email protected]...

PYSEC-2026-1794 libwebp: OOB write in BuildHuffmanTable

Heap buffer overflow in libwebp allow a remote attacker to perform an out of bounds memory write via a crafted HTML page...

PYSEC-2026-727 OpenEXR invalid read

In OpenEXR 2.2.0, an invalid read of size 1 in the getBits function in ImfHuf.cpp could cause the application to crash...

Security update for libjxl

This update for libjxl fixes the following issues: Security fixes: CVE-2025-70103: heap buffer overflow when hen processing crafted pbm-images due to insufficient bounds checks bsc1266460. Other fixes: Update to version 0.10.5: fix tile dimension in low memory rendering pipeline. fix number of...

SUSE-SU-2026:2286-1 Security update for libjxl

This update for libjxl fixes the following issues: Security fixes: - CVE-2025-70103: heap buffer overflow when hen processing crafted pbm-images due to insufficient bounds checks bsc1266460. Other fixes: - Update to version 0.10.5: - fix tile dimension in low memory rendering pipeline. - fix numb...