{"cve":"CVE-2021-3538","nvd":{"published":"2021-06-02T14:15:09.993","modified":"2026-06-17T04:05:18.687","status":"Modified","description":"A flaw was found in github.com/satori/go.uuid in versions from commit 0ef6afb2f6cdd6cdaeee3885a95099c63f18fc8c to d91630c8510268e75203009fe7daf2b8e1d60c45. Due to insecure randomness in the g.rand.Read function the generated UUIDs are predictable for an attacker.","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:H/A:H","score":9.8},"cwes":["CWE-338"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1954376","https://github.com/satori/go.uuid/issues/73","https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMSATORIGOUUID-72488","https://bugzilla.redhat.com/show_bug.cgi?id=1954376","https://github.com/satori/go.uuid/issues/73"],"products":["satori:uuid"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-3538","score":0.02307,"percentile":0.83361,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-33m6-q9v5-62r7","url":"https://osv.dev/vulnerability/GHSA-33m6-q9v5-62r7","summary":"go.uuid has Predictable UUID Identifiers","modified":"2026-03-13T21:57:13.321402Z","packages":[{"ecosystem":"Go","name":"github.com/satori/go.uuid","purl":"pkg:golang/github.com/satori/go.uuid","ranges":[">=1.2.1-0.20180103161547-0ef6afb2f6cd <1.2.1-0.20180404165556-75cca531ea76"],"fixed":["1.2.1-0.20180404165556-75cca531ea76"]}]},{"id":"GO-2022-0244","url":"https://osv.dev/vulnerability/GO-2022-0244","summary":"Insufficient randomness in UUIDs in github.com/satori/go.uuid","modified":"2026-03-13T21:57:13.321402Z","packages":[{"ecosystem":"Go","name":"github.com/satori/go.uuid","purl":"pkg:golang/github.com/satori/go.uuid","ranges":[">=1.2.1-0.20180103161547-0ef6afb2f6cd <1.2.1-0.20180404165556-75cca531ea76"],"fixed":["1.2.1-0.20180404165556-75cca531ea76"]}]}],"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."]}