In the Channelmgnt plug-in for Sopel (a Python IRC bot) before version 1.0.3, malicious users are able to op/voice and take over a channel. This is an ACL bypass vulnerability. This plugin is bundled with MirahezeBot-Plugins with versions from 9.0.0 and less than 9.0.2 affected. Version 9.0.2 includes 1.0.3 of channelmgnt, and thus is safe from this vulnerability. See referenced GHSA-23pc-4339-95vg.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15251
Reference (s):
- https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-j257-jfvv-h3x5
- URL: https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-j257-jfvv-h3x5
- https://github.com/MirahezeBots/MirahezeBots/security/advisories/GHSA-23pc-4339-95vg
- URL: https://github.com/MirahezeBots/MirahezeBots/security/advisories/GHSA-23pc-4339-95vg
- https://github.com/MirahezeBots/sopel-channelmgnt/pull/3