CVE-2026-97257

A deserialization vulnerability in PressTigers Simple Event Planner versions up to 1.5.7 allows for object injection, which could enable an attacker to execute arbitrary code or manipulate application behavior. Organizations using this software should prioritize remediation efforts due to the high severity rating, as exploitation could lead to significant security breaches. Immediate action is recommended for all users of the affected versions to mitigate potential risks.