CVE-2026-94450 — Potential denial of service when configured to send Retry packets in s2n-quic
Improper validation of the Destination Connection ID length in s2n-quic 1.88.0 and earlier may allow an unauthenticated remote user to cause a denial of service by shutting down…
Published: 2026-09-22 · CVSS: 8.7 · CVSS 4.0
Improper validation of the Destination Connection ID length in s2n-quic 1.88.0 and earlier may allow an unauthenticated remote user to cause a denial of service by shutting down a server endpoint via a single crafted UDP datagram. Only server endpoints specifically configured to send Retry packets are affected. To remediate this issue, users should upgrade to version v1.89.0 or later.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7