{"id":"CVE-2020-35886","aliases":["CVE-2020-35888","GHSA-36xw-hgfv-jwm7","GHSA-c7fw-cr3w-wvfc","GHSA-fhvj-7f9p-w788","RUSTSEC-2020-0034"],"url":"https://o3.security/vulnerability/CVE-2020-35886","summary":"Multiple security issues including data race, buffer overflow, and uninitialized memory drop in arr","details":"arr crate contains multiple security issues. Specifically,\n\n1.  It incorrectly implements Sync/Send bounds, which allows to smuggle non-Sync/Send types across the thread boundary.\n2. Index and IndexMut implementation does not check the array bound.\n3. Array::new_from_template() drops uninitialized memory.\n","published":"2020-12-31T10:15:16.520Z","modified":"2026-07-08T20:30:33.768872Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.00192,"percentile":0.09141,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"arr","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2020-0034.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35888"},{"type":"WEB","url":"https://github.com/sjep/array/issues/1"},{"type":"PACKAGE","url":"https://github.com/sjep/array"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:30:33.768872Z"}}