{"cve":"CVE-2019-19794","nvd":{"published":"2019-12-13T22:15:11.357","modified":"2026-06-17T02:27:15.643","status":"Modified","description":"The miekg Go DNS package before 1.1.25, as used in CoreDNS before 1.6.6 and other products, improperly generates random numbers because math/rand is used. The TXID becomes predictable, leading to response forgeries.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9},"cwes":["CWE-338"],"references":["https://github.com/coredns/coredns/issues/3519","https://github.com/coredns/coredns/issues/3547","https://github.com/miekg/dns/compare/v1.1.24...v1.1.25","https://github.com/miekg/dns/issues/1043","https://github.com/miekg/dns/pull/1044"],"products":["miekg-dns_project:miekg-dns"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-19794","score":0.02066,"percentile":0.81385,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-44r7-7p62-q3fr","url":"https://osv.dev/vulnerability/GHSA-44r7-7p62-q3fr","summary":"miekg/dns insecurely generates random numbers","modified":"2023-11-08T04:01:29.591612Z","packages":[{"ecosystem":"Go","name":"github.com/miekg/dns","purl":"pkg:golang/github.com/miekg/dns","ranges":["<1.1.25"],"fixed":["1.1.25"]}]},{"id":"GO-2020-0008","url":"https://osv.dev/vulnerability/GO-2020-0008","summary":"Insecure generation of random numbers in github.com/miekg/dns","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/miekg/dns","purl":"pkg:golang/github.com/miekg/dns","ranges":["<1.1.25-0.20191211073109-8ebf2e419df7"],"fixed":["1.1.25-0.20191211073109-8ebf2e419df7"]}]}],"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."]}