Yarikoptic

**Name of the Vulnerable Software and Affected Versions** Fail2ban versions prior to 0.8.8 **Description** The issue is related to the handling of the content of the matches tag in the server/action.py file. This might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content. **Recommendations** For versions prior to 0.8.8, update to version 0.8.8 or later to resolve the issue. As a temporary workaround, consider restricting access to custom action files to minimize the risk of exploitation.