Threats Tagged 'ghsa-hmj8-5xmh-5573'
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Threats Tagged 'ghsa-hmj8-5xmh-5573'
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libp2p: yamux connection DoS via oversized data frame 0 A denial-of-service vulnerability exists in the yamux stream multiplexer implementation of py-libp2p (<=0.6.0). The vulnerability arises because the code does not validate incoming DATA frame lengths against the receive window before reading the frame body. An attacker can send a single frame claiming a very large body (up to 4 GB), causing the victim's yamux read loop to block indefinitely and stall all streams on that connection. This requires no special setup beyond completing a standard libp2p handshake. Join the discussion | GCVE Database | 07/24/2026, 22:37:17 UTC Added: 07/25/2026, 23:09:11 UTC |
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