{"cve":"CVE-2021-21431","nvd":{"published":"2021-04-09T16:15:11.837","modified":"2026-06-17T03:35:33.767","status":"Modified","description":"sopel-channelmgnt is a channelmgnt plugin for sopel. In versions prior to 2.0.1, on some IRC servers, restrictions around the removal of the bot using the kick/kickban command could be bypassed when kicking multiple users at once. We also believe it may have been possible to remove users from other channels but due to the wonder that is IRC and following RfCs, We have no POC for that. Freenode is not affected. This is fixed in version 2.0.1. As a workaround, do not use this plugin on networks where TARGMAX > 1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H","score":8.1},"cwes":["CWE-20","CWE-284"],"references":["https://github.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856","https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399m","https://pypi.org/project/sopel-plugins.channelmgnt/","https://github.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856","https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399m"],"products":["mirahezebots:channelmgnt"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-21431","score":0.01081,"percentile":0.65156,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-23c7-6444-399m","url":"https://osv.dev/vulnerability/GHSA-23c7-6444-399m","summary":"Improper Input Validation in sopel-plugins.channelmgnt","modified":"2026-07-13T12:14:28.152436566Z","packages":[{"ecosystem":"PyPI","name":"sopel-plugins-channelmgnt","purl":"pkg:pypi/sopel-plugins-channelmgnt","ranges":["<2.0.1"],"fixed":["2.0.1"]}]},{"id":"PYSEC-2021-58","url":"https://osv.dev/vulnerability/PYSEC-2021-58","summary":"","modified":"2023-11-08T04:04:45.958450Z","packages":[{"ecosystem":"PyPI","name":"sopel-plugins-channelmgnt","purl":"pkg:pypi/sopel-plugins-channelmgnt","ranges":["<2.0.1"],"fixed":["2.0.1"]}]}],"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."]}