An issue was discovered in TCPDF before 6.8.0. unserializeTCPDFtag uses != (aka loose comparison) and does not use a constant-time function to compare TCPDF tag hashes.
{ "versions": [ { "introduced": "0" }, { "fixed": "6.8.0" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56522.json"