I take security bugs in mrkdown very seriously. I appreciate your efforts to responsibly disclose your findings, and will make every effort to acknowledge your contributions.
To report a security issue, please use the GitHub Security Advisory "Report a Vulnerability" tab.
I will send a response indicating the next steps in handling your report. After the initial reply to your report, I'll keep you informed of the progress towards a fix and full announcement, and may ask for additional information or guidance.
Report security bugs in third-party modules to the person or team maintaining the module.
This security policy is based (almost entirely) on Electron's. I can't thank them enough for simplifying the language needed to the point that even I could understand it.