perl-Cpanel-JSON-XS versions before 4.80-1.oe2403sp1 contain multiple security vulnerabilities including memory leaks, type confusion, memory exhaustion, and out-of-bounds writes. These issues arise from improper handling of duplicate keys, malformed UTF-8 in keys, large numeric exponents, incremental parsing buffers, and canonical encoding of tied or shared hashes. The vulnerabilities can lead to process crashes, memory exhaustion, and potential denial of service. A fixed version 4.80-1.oe2403sp1 is available addressing these issues.