What happened
The AdonisJS vulnerability allows remote attackers to write files on server, allowing remote attackers to create arbitrary files through improperly validated endpoints. Researchers at Snyk Security reported the flaw in versions 5.x and 6.x of the AdonisJS framework. Attackers can exploit this issue via crafted HTTP requests, resulting in server-side file creation that may lead to webshell deployment or defacement. Misconfigured file storage and insufficient input validation amplify risk. The vulnerability affects web applications running on Node.js servers using AdonisJS as the backend framework, especially those with public-facing endpoints exposing file upload or template rendering features.
Who is affected
Web applications using AdonisJS 5.x and 6.x face direct exposure to unauthorized file writes, potentially impacting organizations relying on Node.js-based platforms.
Why CISOs should care
Exploitation allows attackers to gain footholds, deploy webshells, or escalate privileges, posing operational, reputational, and compliance risks.
3 practical actions
Update frameworks: Patch AdonisJS to the latest secure release.
Harden file handling: Validate and sanitize all file inputs and uploads.
Monitor web traffic: Detect suspicious HTTP requests targeting file endpoints or template engines.