A vulnerability in Nuclei, an open-source vulnerability scanner, allows attackers to bypass signature checks and execute malicious code.The vulnerability stems from discrepancies in newline handling and multi-signature processing, enabling injection of malicious content into templates.The vulnerability impacts versions of Nuclei later than 3.0.0 and has been addressed in version v3.3.2.Exploiting this vulnerability could lead to arbitrary command execution, data exfiltration, or system compromise.