{"cve":"CVE-2020-36443","nvd":{"published":"2021-08-08T06:15:07.240","modified":"2026-06-17T03:15:30.190","status":"Modified","description":"An issue was discovered in the libp2p-deflate crate before 0.27.1 for Rust. An uninitialized buffer is passed to AsyncRead::poll_read(), which is a user-provided trait function.","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-908"],"references":["https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libp2p-deflate/RUSTSEC-2020-0123.md","https://rustsec.org/advisories/RUSTSEC-2020-0123.html","https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libp2p-deflate/RUSTSEC-2020-0123.md","https://rustsec.org/advisories/RUSTSEC-2020-0123.html"],"products":["libp2p:libp2p-deflate"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2020-36443","score":0.0123,"percentile":0.68953,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gvcp-948f-8f2p","url":"https://osv.dev/vulnerability/GHSA-gvcp-948f-8f2p","summary":"Use of Uninitialized Resource in libp2p-deflate","modified":"2023-11-08T04:03:45.145642Z","packages":[{"ecosystem":"crates.io","name":"libp2p-deflate","purl":"pkg:cargo/libp2p-deflate","ranges":["<0.27.1"],"fixed":["0.27.1"]}]},{"id":"RUSTSEC-2020-0123","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0123","summary":"Contents of uninitialized memory exposed in DeflateOutput's AsyncRead implementation","modified":"2023-11-08T04:03:45.145642Z","packages":[{"ecosystem":"crates.io","name":"libp2p-deflate","purl":"pkg:cargo/libp2p-deflate","ranges":[">=0.0.0-0 <0.27.1"],"fixed":["0.27.1"]}]}],"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."]}