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CVE-2021-21431

7.6 · HIGH

sopel-channelmgnt is a channelmgnt plugin for sopel.

Published Apr 9, 2021CWE-20EPSS 1.08%

Overview

CVE-2021-21431 is a high-severity vulnerability. It was published on April 9, 2021 and has a CVSS 3.1 base score of 7.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856GitHubgithub.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399mRefpypi.org/project/sopel-plugins.channelmgnt/GitHubgithub.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856GitHubgithub.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399mRefpypi.org/project/sopel-plugins.channelmgnt/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21431?

CVE-2021-21431 is a high-severity vulnerability. It was published on April 9, 2021 and has a CVSS 3.1 base score of 7.6 (HIGH).

How severe is CVE-2021-21431?

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-21431?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-21431?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21431 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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