CVE-2026-48804
python-socketio is a Python implementation of the Socket.IO realtime client and server. The python-socketio server stores binary `EVENT` and
CVSS
7.5
Alto
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 11 ago 2026 · Última mod.: 11 ago 2026 · CWE-770
Sin historial EPSS suficiente todavía.
python-socketio is a Python implementation of the Socket.IO realtime client and server. The python-socketio server stores binary `EVENT` and `ACK` messages in memory while it waits to receive their binary attachments. Once all the attachments are received, these messages are then processed. Prior to version 5.16.4, an attacker can submit a binary message and intentionally omit sending one or more of its attachments to cause the message along with the partial list of received attachments to stay in memory for a long time. Version 5.16.4 takes the following measures to address this issue: Binary packets are only accepted from authenticated clients and, when a client disconnects, the server checks if there is a partial binary message being held for the client and deletes it.
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CVE-2026-631336.5 MED—
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