CVE-2026-31814

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.

PUBLISHED Reserved 2026-03-09 | Published 2026-03-13 | Updated 2026-03-13 | Assigner GitHub_M

Problem types

CWE-190: Integer Overflow or Wraparound

Product status

References

github.com/...-yamux/security/advisories/GHSA-4w32-2493-32g7

cve.org (CVE-2026-31814)

nvd.nist.gov (CVE-2026-31814)

Download JSON