{"cve":"CVE-2020-28466","nvd":{"published":"2021-03-07T10:15:12.957","modified":"2026-06-17T03:10:30.083","status":"Modified","description":"This affects all versions of package github.com/nats-io/nats-server/server. Untrusted accounts are able to crash the server using configs that represent a service export/import cycles. Disclaimer from the maintainers: Running a NATS service which is exposed to untrusted users presents a heightened risk. Any remote execution flaw or equivalent seriousness, or denial-of-service by unauthenticated users, will lead to prompt releases by the NATS maintainers. Fixes for denial of service issues with no threat of remote execution, when limited to account holders, are likely to just be committed to the main development branch with no special attention. Those who are running such services are encouraged to build regularly from git.","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:N/A:H","score":7.5},"cwes":[],"references":["http://www.openwall.com/lists/oss-security/2021/03/16/1","http://www.openwall.com/lists/oss-security/2021/03/16/2","https://github.com/nats-io/nats-server/pull/1731","https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMNATSIONATSSERVERSERVER-1042967","http://www.openwall.com/lists/oss-security/2021/03/16/1"],"products":["linuxfoundation:nats-server"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2020-28466","score":0.03729,"percentile":0.89816,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-m4jx-6526-vvhm","url":"https://osv.dev/vulnerability/GHSA-m4jx-6526-vvhm","summary":"Denial of service in github.com/nats-io/nats-server/server","modified":"2026-09-10T03:49:12.251251153Z","packages":[{"ecosystem":"Go","name":"github.com/nats-io/nats-server","purl":"pkg:golang/github.com/nats-io/nats-server","ranges":["<2.2.0"],"fixed":["2.2.0"]},{"ecosystem":"Go","name":"github.com/nats-io/nats-server/v2","purl":"pkg:golang/github.com/nats-io/nats-server/v2","ranges":["<2.2.0"],"fixed":["2.2.0"]}]},{"id":"GO-2022-0855","url":"https://osv.dev/vulnerability/GO-2022-0855","summary":"Denial of service in github.com/nats-io/nats-server/server in github.com/nats-io/nats-server","modified":"2026-07-08T06:49:35.074362467Z","packages":[{"ecosystem":"Go","name":"github.com/nats-io/nats-server","purl":"pkg:golang/github.com/nats-io/nats-server","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/nats-io/nats-server/v2","purl":"pkg:golang/github.com/nats-io/nats-server/v2","ranges":["<2.2.0"],"fixed":["2.2.0"]}]}],"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."]}