CVE-2025-43972: Osrg Gobgp

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

An issue was discovered in GoBGP before 3.35.0. An attacker can cause a crash in the pkg/packet/bgp/bgp.go flowspec parser by sending fewer than 20 bytes in a certain context.

Affected products

• Osrg Gobgp: before 3.35.0 (fixed in 3.35.0)

Published 2025-04-21. Last modified 2026-06-17.