CVE-2026-59993

The Picotls TLS protocol library is vulnerable to a null-pointer dereference in revisions through 44bc503 when utilized as a client-side TLS stack . An attacker can trigger this by sending a HelloRetryRequest followed by a spoofed Hello message , which can terminate the consuming process and resu...

CVE-2026-59993 Picotls has NULL pointer dereference during handshake, when running as a client

Picotls is a TLS protocol library that allows users select different crypto backends based on their use case. In affected revisions through 44bc503, when picotls is used as a client-side TLS stack, a peer can send a HelloRetryRequest followed by a spoofed Hello message that causes a null-pointer...

EUVD-2026-114509

Picotls is a TLS protocol library that allows users select different crypto backends based on their use case. In affected revisions through 44bc503, when picotls is used as a client-side TLS stack, a peer can send a HelloRetryRequest followed by a spoofed Hello message that causes a null-pointer...

CVE-2026-59993: h2o picotls: Picotls is a TLS protocol library that allows users select different crypto backends based on their use case

Picotls is a TLS protocol library that allows users select different crypto backends based on their use case. In affected revisions through 44bc503, when picotls is used as a client-side TLS stack, a peer can send a HelloRetryRequest followed by a spoofed Hello message that causes a null-pointer...