JLSEC-2026-757 Use-after-free in PQC hybrid key-share handling

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

PT-2026-52577

Name of the Vulnerable Software and Affected Versions OpenSSL versions prior to 5.9.1 Description A use-after-free issue exists in the handling of PQC hybrid key-shares. A malicious TLS 1.3 server can send a truncated PQC hybrid KeyShare, which triggers an error cleanup path that operates on memo...