CVE-2026-89146
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.6%
47.9th percentile
CISA KEV
Not listed
Weakness / dates
CWE-190
Published 2026-09-11 · modified 2026-09-23
Description
libp2p-rendezvous through 0.17.1 fails to validate registration TTL values in discovery responses, allowing attackers to trigger timer arithmetic overflow. A malicious rendezvous server can send a discovery response with an unbounded TTL value that causes the client node process to panic when computing the expiry timer.
References
- https://docs.rs/crate/libp2p-rendezvous/0.17.1/source/src/client.rs
- https://gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989
- https://github.com/libp2p/rust-libp2p
- https://www.vulncheck.com/advisories/libp2p-rendezvous-through-0.17.1-denial-of-service-via-unbounded-registration-ttl-in-discovery-responses
- https://gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989