{"id":"PYSEC-2026-2812","summary":"Reachable Assertion in OpenCV.","details":"In OpenCV 3.3.1 (corresponds with OpenCV-Python 3.3.1.11), an assertion failure happens in cv::RBaseStream::setPos in modules/imgcodecs/src/bitstrm.cpp because of an incorrect integer cast.","aliases":["CVE-2018-5269","GHSA-89rj-5ggj-3p9p","PYSEC-2026-703"],"modified":"2026-07-13T16:42:29.663271900Z","published":"2026-07-09T16:49:35.722887Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-5269"},{"type":"WEB","url":"https://github.com/opencv/opencv/issues/10540"},{"type":"WEB","url":"https://github.com/opencv/opencv/pull/10563"},{"type":"PACKAGE","url":"https://github.com/opencv/opencv-python"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00019.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00030.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2021/10/msg00028.html"},{"type":"WEB","url":"http://www.securityfocus.com/bid/106945"},{"type":"PACKAGE","url":"https://pypi.org/project/opencv-python"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-89rj-5ggj-3p9p"}],"affected":[{"package":{"name":"opencv-python","ecosystem":"PyPI","purl":"pkg:pypi/opencv-python"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.1.15"}]}],"versions":["3.4.0.14"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/opencv-python/PYSEC-2026-2812.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}