CVE-2021-38561

CVE-2021-38561 is an out-of-bounds read vulnerability in golang.org/x/text/language, affecting versions prior to 0.3.7, which can lead to a denial-of-service (DoS) attack when parsing untrusted BCP 47 language tags due to mishandled index calculation. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.