Provide references for CVE-2021-31718.
Where can I find more information about CVE-2021-31718?
References are available at: https://framagit.org/medoc92/npupnp, https://www.lesbonscomptes.com/upmpdcli/npupnp-doc/libnpupnp.html, http://www.openwall.com/lists/oss-security/2021/04/25/2.