CVE-2023-33980: Briarproject Briar

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Bramble Synchronisation Protocol (BSP) in Briar before 1.4.22 allows attackers to cause a denial of service (repeated application crashes) via a series of long messages to a contact.

Affected products

• Briarproject Briar: before 1.4.22 (fixed in 1.4.22)

Published 2023-05-24. Last modified 2026-06-17.