Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 13, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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.

Affected

• cpe protocol/yamuxversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-31814

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-31814

  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 reacha

  nvd.nist.gov

References

• Exploit · github.com