CVE-2026-95859
CVE-2026-95859 · libp2p-rust: Gossipsub GRAFT topics unbounded growth
This page contains facts from public vulnerability sources. Check the original advisory before updating.
libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.49.5, Gossipsub GRAFT control-message handling unconditionally adds attacker-supplied topic hashes to connected_peer.topics without confirming that the peer previously subscribed to those topics. A remote unauthenticated peer that can reach a Gossipsub listener can repeatedly send novel GRAFT topics, causing cumulative per-peer memory growth that is not bounded by subscription filters, peer scoring, or per-message size limits. This can exhaust process memory and cause a denial of service. This issue is fixed in version 0.49.5.
CVSS 8.7 · High · EPSS 0.3%
- Published
- Updated
Affected products and versions
rust-libp2p
- Versions
- < 0.49.5: Affected
No fix published