CVE-2026-97152: Nanomsg

High severity, CVSS 8.6. EPSS: 0.3% chance of exploitation in the next 30 days.

Nanomsg versions 0.5-beta through 1.x before 1.2.3 has a remotely exploitable buffer overflow in the WebSocket transport, due to an unchecked copy of the Sec-WebSocket-Version header, through snprintf.

Affected products

• Nanomsg Nanomsg: from 0.5.0, before 1.2.3 (fixed in 1.2.3)

Published 2026-09-24. Last modified 2026-09-24.