CVE-2026-89146

Summary

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.

Affected Software

Weaknesses

• CWE-190: CWE-190: Integer Overflow or Wraparound
• CWE-617: CWE-617: Reachable Assertion

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: partial

Additional References

• https://gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989

References

• https://gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989
• https://docs.rs/crate/libp2p-rendezvous/0.17.1/source/src/client.rs
• 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

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