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VULNERABILITIES

CVE-2026-31814 Details

Description

Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. From 0.13.0 to before 0.13.9, a specially crafted WindowUpdate can cause arithmetic overflow in send-window accounting, which triggers a panic in the connection state machine. This is remotely reachable over a normal network connection and does not require authentication. This vulnerability is fixed in 0.13.9.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/libp2p/rust-yamux/security/advisories/GHSA-4w32-2493-32g7 [email protected]ExploitVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-190Integer Overflow or Wraparound[email protected]

Affected Products

ProductVersions
protocol yamux
>= 0.13.0, < 0.13.9

CPE

  • cpe:2.3:a:protocol:yamux:*:*:*:*:*:rust:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-31814
NVD Published Date:
Mar 13, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-31814 Details - Not Deferred