CVE-2026-119338

Tesseract is an open source OCR engine. From 5.4.0 until 5.5.4, AppendLinePolygon in src/api/pagerenderer.cpp destroys the caller-owned right-to-left Pta accumulator while receiving it by value, leaving line_top_rtl_pts and line_bottom_rtl_pts dangling. On an upright Hebrew or Arabic page at the default PAGE XML level, POLYGONFLAG with a false skewed_flag enters the vulnerable calls, while LEVELFLAG greater than zero provides an alternative gate. The calls repeatedly read and free the stale object, causing a double free and use after free and allowing corrupted coordinates to reach RecalcPolygonline. This issue is fixed in version 5.5.4.

• https://github.com/tesseract-ocr/tesseract/commit/fa52414ff1fd13ae4b00048d2498f9141b0bc2eb
• https://github.com/tesseract-ocr/tesseract/pull/4647
• https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4
• https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-vf7v-2h4f-6f4j

• https://github.com/tesseract-ocr/tesseract/commit/fa52414ff1fd13ae4b00048d2498f9141b0bc2eb
• https://github.com/tesseract-ocr/tesseract/pull/4647
• https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4
• https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-vf7v-2h4f-6f4j

• MEDIUMCVE-2026-107209PoC
• HIGHCVE-2026-119116PoC
• CRITICALCVE-2026-5759PoC
• MEDIUMCVE-2026-70201
• UNSCOREDCVE-2026-94370
• UNSCOREDCVE-2026-95702PoC
• LOWCVE-2024-58392PoC
• MEDIUMCVE-2024-58397PoC

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