{"id":"PYSEC-2026-702","summary":"Out-of-bounds Read in OpenCV","details":"In OpenCV 3.3.1 (corresponding with OpenCV-Python 3.3.1.11), a heap-based buffer over-read exists in the function cv::HdrDecoder::checkSignature in modules/imgcodecs/src/grfmt_hdr.cpp.","aliases":["CVE-2017-18009","GHSA-83rh-hx5x-q9p5"],"modified":"2026-07-06T08:00:48.540424850Z","published":"2026-07-02T14:13:12.360350Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18009"},{"type":"WEB","url":"https://github.com/opencv/opencv/issues/10479"},{"type":"WEB","url":"https://github.com/opencv/opencv/pull/10480/commits/4ca89db22dea962690f31c1781bce5937ee91837"},{"type":"PACKAGE","url":"https://github.com/opencv/opencv-python"},{"type":"WEB","url":"http://www.securityfocus.com/bid/106945"},{"type":"PACKAGE","url":"https://pypi.org/project/opencv-contrib-python"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-83rh-hx5x-q9p5"}],"affected":[{"package":{"name":"opencv-contrib-python","ecosystem":"PyPI","purl":"pkg:pypi/opencv-contrib-python"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.1.15"}]}],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/opencv-contrib-python/PYSEC-2026-702.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}