{"id":"CVE-2020-15093","revision":"b91919255b104673b76e6bf8bc9f02ad","records":[{"revision":"b91919255b104673b76e6bf8bc9f02ad","observedAt":"2026-10-24T16:17:20.632+00:00","statement":{"source":"nvd","id":"CVE-2020-15093","aliases":[],"title":"The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of u…","description":"The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A fix is available in version 0.7.1. CVE-2020-6174 is assigned to the same vulnerability in the TUF reference implementation.","state":0,"publishedAt":"2020-07-09T19:15:11.413+00:00","modifiedAt":"2026-06-17T02:56:02.333+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","score":8.6,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","score":8.6,"severity":"HIGH"},{"system":"CVSS 2.0 · nvd@nist.gov · Primary","vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","score":5,"severity":"MEDIUM"}],"references":["https://crates.io/crates/tough","https://github.com/awslabs/tough/security/advisories/GHSA-5q2r-92f9-4m49","https://github.com/theupdateframework/tuf/commit/2977188139d065ff3356c3cb4aec60c582b57e0e","https://github.com/theupdateframework/tuf/pull/974"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-15093","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-347"],"productCriteria":["cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*"],"sourceDates":{"published":"2020-07-09T19:15:11.413","lastModified":"2026-06-17T02:56:02.333"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2020-15093","identifiers":["CVE-2020-15093"]},"retained":false,"historicalAffected":[]}],"coverage":[]}