CVE-2026-89146

libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses

HIGH
7.5
CVSS Score
Published: September 11, 2026 at 10:46 AM UTC
Updated: September 23, 2026 at 05:30 PM UTC
2 products affected across 1 vendorLIBP2PRendezvous

Using libp2p-rendezvous by libp2p?

Get instant alerts when new vulnerabilities affect libp2p-rendezvous - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
v ≤ 0.17.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-190CWE-617

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card