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Panic while parsing crafted ECDHE_PSK ServerKeyExchange in github.com/pion/dtls/v3

Exact source revision recorded 24 Oct 2026 13:19:41 UTC. It does not establish the source's current position. Latest evidence.

osv · GO-2026-6165

Published

In github.com/pion/dtls/v3 before 3.1.4, MessageServerKeyExchange.Unmarshal does not verify that data remains after parsing the PSK identity hint when handling ECDHE_PSK key exchange messages. A remote peer sending a crafted ServerKeyExchange message where the PSK hint consumes all remaining data triggers an index out of range runtime panic, causing a denial of service.

Source published
18 Aug 2026 16:38:10 UTC
Source modified
18 Aug 2026 17:15:27 UTC
Observed here
24 Oct 2026 13:19:41 UTC
Source terms
OSV · upstream source license applies

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Sources read 8 Nov 00:03 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current