CVE-2026-35457

libp2p-rust has unbounded rendezvous DISCOVER cookies enable remote memory exhaustion

State: Published
Severity: 8.2 High
Published: Apr 7, 2026
Updated: Apr 7, 2026
Reserved: Apr 2, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H	GitHub_M

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
rust-libp2plibp2p	< 0.17.1Affected

References

https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-v5hw-cv9c-rpg7

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