We’ve published a security advisory for the sofia-sip library. We’ve released version 1.13.14 of sofia-sip to address this issue. You’ll just need to update the library. No need to rebuild anything, and we’re not releasing a new version of FreeSWITCH because of this.
Learn more here, and make sure to update sofia-sip to 1.13.14 - https://github.com/freeswitch/sofia-sip/security/advisories/GHSA-h94r-c3pv-4564