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.
Scores
CVSS v3
7.5
EPSS
0.0003
EPSS Percentile
7.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-190
Status
published
Products (3)
crates.io/yamux
0.13.0 - 0.13.9crates.io
libp2p/rust-yamux
>= 0.13.0, < 0.13.9
protocol/yamux
0.13.0 - 0.13.9
Published
Mar 13, 2026
Tracked Since
Mar 14, 2026