CVE-2026-88050 Tesseract: Out-of-bounds write in UnicharCompress via unvalidated recoder code values

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, RecodedCharID::DeSerialize in src/ccutil/unicharcompress.h validates length but accepts negative code values from a crafted .traineddata recoder component. UnicharCompress::ComputeCodeRange in src/ccutil/unicharcompress.cpp can...

CVE-2026-88050

Tesseract (open-source OCR engine) versions 5.5.3 and earlier contain an out-of-bounds write in the UnicharCompress component. The root cause is that RecodedCharID::DeSerialize in src/ccutil/unicharcompress.h validates length_ but accepts negative code_ values from a crafted .traineddata recoder ...