{"id":"CVE-2026-119339","title":"Tesseract: Crafted LSTM model (`WeightMatrix` mode byte) triggers `ASSERT_HOST` abort in `WeightMatrix::DeSerializeOld` under `FAST_FLOAT` — Denial of Service","summary":"Tesseract is an open source OCR engine. Prior to 5.5.4, WeightMatrix::DeSerialize trusts a mode byte from a traineddata LSTM network and calls WeightMatrix::DeSerializeOld when kDoubleFlag is clear. In default FAST_FLOAT builds, DeSerial…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-20","CWE-617"],"vendor":"tesseract-ocr","product":"tesseract","affected":["tesseract < 5.5.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-30T21:18:18.116329Z"},"published":"2026-10-30","updated":"2026-10-30","sourceUpdated":"2026-10-30T22:13:31.619Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119339","references":[{"url":"https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-h9g4-frjx-6cj3","label":"https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-h9g4-frjx-6cj3"},{"url":"https://github.com/tesseract-ocr/tesseract/pull/4657","label":"https://github.com/tesseract-ocr/tesseract/pull/4657"},{"url":"https://github.com/tesseract-ocr/tesseract/commit/c053424327352b9d5180aa7540c1f9e67c64f27e","label":"https://github.com/tesseract-ocr/tesseract/commit/c053424327352b9d5180aa7540c1f9e67c64f27e"},{"url":"https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4","label":"https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4"}],"tags":["cve.org"],"epss":0.00165,"epssPercentile":0.05728,"ingestedAt":"2026-11-05T16:24:31.474Z","slug":"CVE-2026-119339","body":"## Overview\n\nTesseract is an open source OCR engine. Prior to 5.5.4, WeightMatrix::DeSerialize trusts a mode byte from a traineddata LSTM network and calls WeightMatrix::DeSerializeOld when kDoubleFlag is clear. In default FAST_FLOAT builds, DeSerializeOld invokes ASSERT_HOST instead of returning an error, so loading a crafted model through TessBaseAPI::Init terminates the process and causes denial of service. This issue is fixed in version 5.5.4.\n\n## Affected\n\n- `tesseract < 5.5.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}