High severity7.5NVD Advisory· Published Sep 11, 2026· Updated Sep 23, 2026

CVE-2026-89146

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Ipld/Libp2p Gossipsubreferences
Libp2p/libp2p-rendezvousllm-fuzzy
Range: <=0.17.1
Libp2p/Rust Libp2pllm-fuzzy
Range: <=0.17.1

Patches

Vulnerability mechanics

References

docs.rs/crate/libp2p-rendezvous/0.17.1/source/src/client.rsnvd
gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989nvd
www.vulncheck.com/advisories/libp2p-rendezvous-through-0.17.1-denial-of-service-via-unbounded-registration-ttl-in-discovery-responsesnvd

News mentions

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cvss	0.488
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000