Source: python-engineio Version: 4.13.0-2 Severity: important Tags: security upstream X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for python-engineio. CVE-2026-48804[0]: | 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. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-48804 https://www.cve.org/CVERecord?id=CVE-2026-48804 [1] https://github.com/miguelgrinberg/python-socketio/security/advisories/GHSA-5w7q-77mv-v69f [2] https://github.com/miguelgrinberg/python-socketio/commit/4bec3ef87bcfd6ab5b94cd3ac09d873283a6960e Please adjust the affected versions in the BTS as needed. Regards, Salvatore
