{"cve":"CVE-2021-29935","nvd":{"published":"2021-04-01T05:15:14.593","modified":"2026-06-17T03:48:28.230","status":"Modified","description":"An issue was discovered in the rocket crate before 0.4.7 for Rust. uri::Formatter can have a use-after-free if a user-provided function panics.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","score":7.3},"cwes":["CWE-416"],"references":["https://rustsec.org/advisories/RUSTSEC-2021-0044.html","https://rustsec.org/advisories/RUSTSEC-2021-0044.html"],"products":["rocket:rocket"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-29935","score":0.01025,"percentile":0.636,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vcw4-8ph6-7vw8","url":"https://osv.dev/vulnerability/GHSA-vcw4-8ph6-7vw8","summary":"Use after free in Rocket","modified":"2023-11-08T04:05:43.819286Z","packages":[{"ecosystem":"crates.io","name":"rocket","purl":"pkg:cargo/rocket","ranges":["<0.4.7"],"fixed":["0.4.7"]}]},{"id":"RUSTSEC-2021-0044","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0044","summary":"Use after free possible in `uri::Formatter` on panic","modified":"2023-11-08T04:05:43.819286Z","packages":[{"ecosystem":"crates.io","name":"rocket","purl":"pkg:cargo/rocket","ranges":[">=0.0.0-0 <0.4.7"],"fixed":["0.4.7"]}]}],"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."]}