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Vulnerabilities CVE-2026-69185

CVE-2026-69185

High
Open
TLP:CLEAR

Socket.IO: Zero-attachment Memory Exhaustion

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Description

Socket.IO enables bidirectional and low-latency communication for every platform. Prior to 4.2.7, 3.4.5, and 3.3.6, a specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory. This vulnerability is fixed in 4.2.7, 3.4.5, and 3.3.6.

Details

CVSS Score
7.5
EPSS Score
0.35%

27.7th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence
90%
Published
Aug 3, 2026
Last Modified
Aug 3, 2026
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