punycoder is distributed through CRAN. Security fixes are made against the latest released version; please upgrade to the most recent release before reporting.

Please do not report security vulnerabilities through public GitHub issues.

Preferred channel — GitHub private vulnerability reporting:

1. Go to the repository's Security tab.
2. Click Report a vulnerability.

This opens a private security advisory visible only to the maintainers.

If you cannot use that channel, email the maintainer at bartek@turczynski.pl instead.

• We aim to acknowledge a report within 7 days.
• We will investigate, work on a fix, and coordinate disclosure with you.
• We are happy to credit reporters in the release notes unless you prefer to remain anonymous.

punycoder is a C/C++ and R library for RFC 3492 Punycode encoding/decoding and UTS #46 IDNA host normalization. It makes no network connections of its own and handles no credentials. Its security surface is the safe handling of untrusted Punycode and internationalized domain name input, including the C/C++ codec core (buffer handling, UTF-8 decoding, and domain label parsing).