CVE-2021-43783

CVE-2021-43783 affects the @backstage/plugin-scaffolder-backend, allowing a malicious actor with write access to a registered template to write files to arbitrary paths on the host instance. This vulnerability can also be triggered through user input during template execution, though without control over file content unless the template is specifically crafted. With a CVSS score of 8.5 (HIGH), this vulnerability has a network attack vector and low attack complexity, potentially leading to high impact on integrity and low impact on availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.