{"cve":"CVE-2023-40889","nvd":{"published":"2023-08-29T17:15:12.840","modified":"2026-06-17T06:19:48.080","status":"Modified","description":"A heap-based buffer overflow exists in the qr_reader_match_centers function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-787"],"references":["https://hackmd.io/%40cspl/B1ZkFZv23","https://lists.debian.org/debian-lts-announce/2023/12/msg00001.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25LZZQJGGZRPLKTRNRNOTAFQJIPS7WRP/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DC7V5YCLCPB36J2KY6WLZCABFLBRB665/","https://hackmd.io/%40cspl/B1ZkFZv23"],"products":["zbar_project:zbar"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2023-40889","score":0.01748,"percentile":0.77847,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mhp6-jvpx-2p4m","url":"https://osv.dev/vulnerability/GHSA-mhp6-jvpx-2p4m","summary":"Heap-based buffer overflow in ZBar","modified":"2026-06-29T12:26:35.245224383Z","packages":[{"ecosystem":"PyPI","name":"zbar","purl":"pkg:pypi/zbar","ranges":["<=0.23.90"],"fixed":[]}]},{"id":"PYSEC-2026-576","url":"https://osv.dev/vulnerability/PYSEC-2026-576","summary":"Heap-based buffer overflow in ZBar","modified":"2026-07-01T20:23:12.100943Z","packages":[{"ecosystem":"PyPI","name":"zbar","purl":"pkg:pypi/zbar","ranges":["<=0.23.90"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}