{"id":"CVE-2021-27293","details":"RestSharp \u003c 106.11.8-alpha.0.13 uses a regular expression which is vulnerable to Regular Expression Denial of Service (ReDoS) when converting strings into DateTimes. If a server responds with a malicious string, the client using RestSharp will be stuck processing it for an exceedingly long time. Thus the remote server can trigger Denial of Service.","aliases":["GHSA-9pq7-rcxv-47vq"],"modified":"2026-07-08T05:59:30.281747570Z","published":"2021-07-12T11:15:08.100Z","database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.10:*:*:*:*:*:*","cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.11:*:*:*:*:*:*","cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.12:*:*:*:*:*:*","cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.2:*:*:*:*:*:*","cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.3:*:*:*:*:*:*","cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.4:*:*:*:*:*:*","cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.6:*:*:*:*:*:*","cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.7:*:*:*:*:*:*"],"extracted_events":[{"introduced":"106.11.8-alpha0\\.10"},{"last_affected":"106.11.8-alpha0\\.10"},{"introduced":"106.11.8-alpha0\\.11"},{"last_affected":"106.11.8-alpha0\\.11"},{"introduced":"106.11.8-alpha0\\.12"},{"last_affected":"106.11.8-alpha0\\.12"},{"introduced":"106.11.8-alpha0\\.2"},{"last_affected":"106.11.8-alpha0\\.2"},{"introduced":"106.11.8-alpha0\\.3"},{"last_affected":"106.11.8-alpha0\\.3"},{"introduced":"106.11.8-alpha0\\.4"},{"last_affected":"106.11.8-alpha0\\.4"},{"introduced":"106.11.8-alpha0\\.6"},{"last_affected":"106.11.8-alpha0\\.6"},{"introduced":"106.11.8-alpha0\\.7"},{"last_affected":"106.11.8-alpha0\\.7"}],"source":"CPE_STRING","vendor_product":"restsharp:restsharp"}]},"references":[{"type":"WEB","url":"https://restsharp.dev/"},{"type":"FIX","url":"https://github.com/restsharp/RestSharp/issues/1556"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/restsharp/restsharp","events":[{"introduced":"0"},{"last_affected":"b78927d85a6cb4f0540f89e4f923229462e897d3"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:restsharp:restsharp:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"106.11.7"}]}}],"versions":["106.11.7","106.11.4","106.11.3","106.11.2","106.11.1","106.11.0","106.10.1","106.10.0","106.9.0","106.7.0","106.7","106.6.10","106.8.9","106.6.8","106.6.7","106.3.1","106.3","106.2.2","106.2.1","106.2","legacy","105.2.3","105.2.2","105.2.1","105.1.0","105.0.1","105.0","104.5.0","104.3.3","104.2","104.1","104.0","103.4","103.3","103.2","v103.1","v103.0","v102.7","v102.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27293.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}