Integer overflow in Libp2p Libp2p-Rendezvous
CVE-2026-89146
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (49.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989 (third-party-advisory)
- docs.rs/crate/libp2p-rendezvous/0.17.1/source/src/client.rs (technical-description)
- github.com/libp2p/rust-libp2p (product)
- www.vulncheck.com/advisories/libp2p-rendezvous-through-0.17.1-denial-of-service… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-89146?
- CVE-2026-89146 is a high-severity vulnerability in Libp2p Libp2p-Rendezvous, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2026-09-11.
- How severe is CVE-2026-89146?
- High severity. CVSS v3 base score is 7.5 out of 10.