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
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.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (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.