CVE-2026-34219

Katalog CVE

CVSS 5.9 · Medium EPSS 0,50%

Kerentanan Integer Overflow or Wraparound pada protocol libp2p-gossipsub. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to version 0.49.4, the Rust libp2p Gossipsub implementation contains a remotely reachable panic in backoff expiry handling. After a peer sends a crafted PRUNE control message with an attacker-controlled, near-maximum backoff value, the value is accepted and stored as an Instant near the representable upper bound. On a later heartbeat, the implementation performs unchecked Instant + Duration arithmetic (backoff_time + slack), which can overflow and panic with: overflow when adding duration to instant. This issue is reachable from any Gossipsub peer over normal TCP + Noise + mplex/yamux connectivity and requires no further authentication beyond becoming a protocol peer. This issue has been patched in version 0.49.4.

Rincian

Terbit di NVD

31 Maret 2026

Terakhir diubah

24 Juli 2026

Status NVD

Analyzed

CVSS 3.1

5.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound
CWE-617: Reachable Assertion

EPSS (30 hari)

0,50% peluang dieksploitasi; lebih tinggi dari 41,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-xqmp-fxgv-xvq5 exploit · advisory vendor