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LiteSpeed LSQUICA hash collision vulnerability (in the hash table used to manage connections) in LSQUIC (aka LiteSpe…

Risk 19
Severity
5.3
EPSS
0.04%
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

A hash collision vulnerability (in the hash table used to manage connections) in LSQUIC (aka LiteSpeed QUIC) before 4.2.0 allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs). This is caused by XXH32 usage.

First published (updated )
CVE-2025-24947

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SecAlerts Pty Ltd.
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info@secalerts.co
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