{"id":"UBUNTU-CVE-2021-36081","details":"Tesseract OCR 5.0.0-alpha-20201231 has a one_ell_conflict use-after-free during a strpbrk call.","modified":"2026-04-22T14:51:56.727047Z","published":"2021-07-01T03:15:00Z","upstream":["CVE-2021-36081"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-36081"},{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29698"},{"type":"REPORT","url":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/tesseract-ocr/OSV-2021-211.yaml"},{"type":"REPORT","url":"https://github.com/tesseract-ocr/tesseract/commit/e6f15621c2ab2ecbfabf656942d8ef66f03b2d55"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-36081"}],"affected":[{"package":{"name":"tesseract","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/tesseract@4.1.1-2build2?arch=source&distro=focal"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.1.1-2build2"},{"binary_name":"tesseract-ocr","binary_version":"4.1.1-2build2"},{"binary_name":"tesseract-ocr-all","binary_version":"4.1.1-2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36081.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/tesseract@4.1.1-2.1build1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.1-2.1","4.1.1-2.1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.1.1-2.1build1"},{"binary_name":"tesseract-ocr","binary_version":"4.1.1-2.1build1"},{"binary_version":"4.1.1-2.1build1","binary_name":"tesseract-ocr-all"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36081.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}