CVE-2026-42285 — GoBGP: Panic in AdjRib.Update via malformed BGP Update message (Nil Pointer Dereference)
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal pan…
Published: 2026-05-07 · CVSS: 7.5 · CVSS 3.1
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message. When the server receives a message with inconsistent attribute lengths, it improperly handles the internal state transition to a "withdraw" action, leading to a nil pointer dereference in the AdjRib.Update function. This causes the entire GoBGP process to crash, resulting in a complete loss of service availability. This issue has been patched in version 4.5.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7