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CVE-2026-89146— libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses

Quick assessment

Affected
libp2p libp2p-rendezvous
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libp2p-rendezvous 0.17.1 及更早版本未能验证发现响应中的注册 TTL 值，使得攻击者能够触发计时器算术溢出。恶意的 rendezvous 服务器可以发送一个具有无界（未限制）TTL 值的发现响应，导致客户端节点在计算过期计时器时发生进程崩溃（panic）。

CVSS 7.5 · High

Possible ATT&CK Techniques 2 AI

T1573 · Encrypted Channel T1618

Affected Version Matrix 1

VendorProduct Version RangeStatus
libp2p libp2p-rendezvous ≤ 0.17.1 affected
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I. Basic Information for CVE-2026-89146

Vulnerability Information
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Vulnerability Title
libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
libp2p libp2p-rendezvous 0 ~ 0.17.1 -

II. Public POCs for CVE-2026-89146

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III. Intelligence Information for CVE-2026-89146

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Vendor Advisories for CVE-2026-89146 (1)

Proof of Concept for CVE-2026-89146 (1)

Vendor Pages for CVE-2026-89146 (1)

Other References for CVE-2026-89146 (1)

IV. Related Vulnerabilities

Same vendor: libp2p
Same weakness: CWE-190

V. Comments for CVE-2026-89146

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