{"cve":"CVE-2020-29367","nvd":{"published":"2020-11-27T20:15:11.090","modified":"2026-06-17T03:11:13.310","status":"Modified","description":"blosc2.c in Blosc C-Blosc2 through 2.0.0.beta.5 has a heap-based buffer overflow when there is a lack of space to write compressed data.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-787"],"references":["https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26442","https://github.com/Blosc/c-blosc2/commit/c4c6470e88210afc95262c8b9fcc27e30ca043ee","https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26442","https://github.com/Blosc/c-blosc2/commit/c4c6470e88210afc95262c8b9fcc27e30ca043ee"],"products":["blosc:c-blosc2"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-29367","score":0.01201,"percentile":0.68209,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8c7c-2c8j-3xfp","url":"https://osv.dev/vulnerability/GHSA-8c7c-2c8j-3xfp","summary":"blosc2 heap-based buffer overflow","modified":"2026-06-10T18:42:41Z","packages":[{"ecosystem":"PyPI","name":"blosc2","purl":"pkg:pypi/blosc2","ranges":["<0.1.7"],"fixed":["0.1.7"]}]}],"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."]}