CVE-2026-16766 RRWO CVE debrief

Who should care

Users of Catalyst::View::Wkhtmltopdf versions before 0.6.1 for Perl should be aware of this vulnerability and take steps to mitigate it. This includes validating user-controlled options and migrating to alternative solutions.

Technical summary

The vulnerability exists in Catalyst::View::Wkhtmltopdf versions before 0.6.1 for Perl. The wkhtmltopdf command is used to generate PDFs, and user-controlled options are passed directly to this command without sanitization. This allows for shell command injection, potentially leading to remote code execution. The vulnerability is particularly concerning because the wkhtmltopdf project is no longer being developed, leaving users without a clear path for remediation.

Defensive priority

High

Recommended defensive actions

• Validate and sanitize user-controlled options passed to the wkhtmltopdf command
• Migrate to alternative solutions that are actively maintained and support secure PDF generation
• Monitor for and respond to potential exploitation attempts
• Inventory affected systems and prioritize patching or migration efforts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The CVE record was published on 2026-07-25T09:16:32.000Z and has not been modified since then. The NVD entry is currently Received. Multiple sources, including GitHub and Metacpan, provide additional information about the vulnerability and potential mitigations.

Official resources