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CVE-2026-31814
Published: Mar 13, 2026
Modified: Mar 13, 2026
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
libp2p | rust-yamux | affected >= 0.13.0, < 0.13.9 |
Weaknesses (CWE)
References
https://github.com/libp2p/rust-yamux/security/advisories/GHSA-4w32-2493-32g7
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