{"cve":"CVE-2020-28247","nvd":{"published":"2020-11-12T18:15:15.737","modified":"2026-06-17T03:10:14.430","status":"Modified","description":"The lettre library through 0.10.0-alpha for Rust allows arbitrary sendmail option injection via transport/sendmail/mod.rs.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":[],"references":["https://github.com/RustSec/advisory-db/pull/478/files","https://github.com/lettre/lettre","https://rustsec.org/advisories/RUSTSEC-2020-0069.html","https://github.com/RustSec/advisory-db/pull/478/files","https://github.com/lettre/lettre"],"products":["lettre:lettre"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-28247","score":0.01522,"percentile":0.74617,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vc2p-r46x-m3vx","url":"https://osv.dev/vulnerability/GHSA-vc2p-r46x-m3vx","summary":"Argument injection in lettre","modified":"2023-11-08T04:03:24.160094Z","packages":[{"ecosystem":"crates.io","name":"lettre","purl":"pkg:cargo/lettre","ranges":[">=0.9.0 <0.9.5"],"fixed":["0.9.5"]},{"ecosystem":"crates.io","name":"lettre","purl":"pkg:cargo/lettre","ranges":[">=0.8.0 <0.8.4"],"fixed":["0.8.4"]},{"ecosystem":"crates.io","name":"lettre","purl":"pkg:cargo/lettre","ranges":[">=0.7.0 <0.7.1"],"fixed":["0.7.1"]}]},{"id":"RUSTSEC-2020-0069","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0069","summary":"Argument injection in sendmail transport","modified":"2023-11-08T04:03:24.160094Z","packages":[{"ecosystem":"crates.io","name":"lettre","purl":"pkg:cargo/lettre","ranges":[">=0.7.0 <0.7.1",">=0.8.0 <0.8.4",">=0.9.0 <0.9.5",">=0.10.0-alpha.1 <0.10.0-alpha.4"],"fixed":["0.7.1","0.8.4","0.9.5","0.10.0-alpha.4"]}]}],"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."]}