{"id":"UBUNTU-CVE-2026-119339","details":"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, 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.","modified":"2026-11-04T03:30:25.557921288Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-119339"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-119339"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-119339"},{"type":"REPORT","url":"https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-h9g4-frjx-6cj3"},{"type":"REPORT","url":"https://github.com/tesseract-ocr/tesseract/pull/4657"},{"type":"REPORT","url":"https://github.com/tesseract-ocr/tesseract/commit/c053424327352b9d5180aa7540c1f9e67c64f27e"},{"type":"REPORT","url":"https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4"}],"affected":[{"package":{"name":"tesseract","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.02.02-1","3.03.02-3","3.03.02-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract3","binary_version":"3.03.02-3ubuntu0.1~esm1"},{"binary_name":"tesseract-ocr","binary_version":"3.03.02-3ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119339.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.04.00-5ubuntu1","3.04.01-2","3.04.01-4","3.04.01-4ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.04.01-4ubuntu0.1~esm1","binary_name":"libtesseract3"},{"binary_name":"tesseract-ocr","binary_version":"3.04.01-4ubuntu0.1~esm1"},{"binary_name":"tesseract-ocr-all","binary_version":"3.04.01-4ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119339.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.04.01-6","3.04.01-6build1","3.04.01-6build2","4.00~git2188-cdc35338-4build1","4.00~git2188-cdc35338-5","4.00~git2207-766b7bd6-3.1","4.00~git2219-40f43111-1.2","4.00~git2288-10f4998a-2","4.00~git2288-10f4998a-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.00~git2288-10f4998a-2ubuntu0.1~esm1"},{"binary_version":"4.00~git2288-10f4998a-2ubuntu0.1~esm1","binary_name":"tesseract-ocr"},{"binary_name":"tesseract-ocr-all","binary_version":"4.00~git2288-10f4998a-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119339.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.0-1","4.1.0-2","4.1.1-1","4.1.1-2","4.1.1-2build1","4.1.1-2build2","4.1.1-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.1.1-2ubuntu0.1~esm1"},{"binary_name":"tesseract-ocr","binary_version":"4.1.1-2ubuntu0.1~esm1"},{"binary_name":"tesseract-ocr-all","binary_version":"4.1.1-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119339.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.1-2.1","4.1.1-2.1build1","4.1.1-2.1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.1.1-2.1ubuntu0.1~esm1"},{"binary_name":"tesseract-ocr","binary_version":"4.1.1-2.1ubuntu0.1~esm1"},{"binary_version":"4.1.1-2.1ubuntu0.1~esm1","binary_name":"tesseract-ocr-all"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119339.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-2build1","5.3.3-1","5.3.3-1build1","5.3.4-1","5.3.4-1build3","5.3.4-1build4","5.3.4-1build5","5.3.4-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract5","binary_version":"5.3.4-1ubuntu0.1~esm1"},{"binary_name":"tesseract-ocr","binary_version":"5.3.4-1ubuntu0.1~esm1"},{"binary_name":"tesseract-ocr-all","binary_version":"5.3.4-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119339.json"}},{"package":{"name":"tesseract","eco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