{"id":"CVE-2021-34801","aliases":["GHSA-p2c4-gxp4-j3xp"],"url":"https://o3.security/vulnerability/CVE-2021-34801","summary":"Denial of service in Valine","details":"Valine is a fast, simple & powerful comment system. Valine 1.4.14 allows remote attackers to cause a denial of service (application outage) by supplying a ua (aka User-Agent) value that only specifies the product and version.","published":"2021-06-16T15:15:08.533Z","modified":"2026-10-20T10:53:48.803952544Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"valine","fixedVersion":null}],"fix":null,"references":[{"type":"REPORT","url":"https://github.com/xCss/Valine/issues/366"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34801"},{"type":"PACKAGE","url":"https://github.com/xCss/Valine"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:53:48.803952544Z"}}