{"cve":"CVE-2021-26308","nvd":{"published":"2021-01-29T03:15:12.550","modified":"2026-06-17T03:43:05.123","status":"Modified","description":"An issue was discovered in the marc crate before 2.0.0 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated memory, violating soundness.","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:N/A:N","score":7.5},"cwes":[],"references":["https://rustsec.org/advisories/RUSTSEC-2021-0014.html","https://rustsec.org/advisories/RUSTSEC-2021-0014.html"],"products":["marc_project:marc"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-26308","score":0.01516,"percentile":0.74539,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-3mf3-2gv9-h39j","url":"https://osv.dev/vulnerability/GHSA-3mf3-2gv9-h39j","summary":"Uninitialized buffer use in marc","modified":"2023-11-08T04:05:20.909149Z","packages":[{"ecosystem":"crates.io","name":"marc","purl":"pkg:cargo/marc","ranges":["<2.0.0"],"fixed":["2.0.0"]}]},{"id":"RUSTSEC-2021-0014","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0014","summary":"Record::read : Custom `Read` on uninitialized buffer may cause UB","modified":"2023-11-08T04:05:20.909149Z","packages":[{"ecosystem":"crates.io","name":"marc","purl":"pkg:cargo/marc","ranges":[">=0.0.0-0 <2.0.0"],"fixed":["2.0.0"]}]}],"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."]}