What is CVE-2026-35457?

CVE-2026-35457 is a high-severity vulnerability in Libp2p Rust-Libp2p, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 8.2/10. Published 2026-04-07.

How severe is CVE-2026-35457?

High severity. CVSS v3 base score is 8.2 out of 10.

Resource exhaustion in Libp2p Rust-Libp2p

CVE-2026-35457

libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to 0.17.1, the rendezvous server stores pagination cookies without bounds. An unauthenticated peer can repeatedly issue DISCOVER requests and force unbounded memory growth. This vulnerability is fixed in 0.17.1.

Published 2026-04-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Libp2p Rust-Libp2p — versions < 0.17.1
Protocol Libp2p

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/libp2p/rust-libp2p/security/advisories/GHSA-v5hw-cv9c-rpg7 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35457?: CVE-2026-35457 is a high-severity vulnerability in Libp2p Rust-Libp2p, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 8.2/10. Published 2026-04-07.
How severe is CVE-2026-35457?: High severity. CVSS v3 base score is 8.2 out of 10.