SB20261109154 - Input validation error in socket.io-parser

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Main Vulnerability Database SB20261109154

SB20261109154 - Input validation error in socket.io-parser

Published: November 9, 2026

Security Bulletin ID SB20261109154
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: CVE-2026-69185)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an unauthenticated remote attacker to exhaust server memory and cause a denial of service.

The vulnerability exists due to improper validation in socket.io-parser when a specially crafted Socket.IO packet causes the server to expect a large number of binary attachments. An unauthenticated remote attacker can send the crafted packet and binary attachments to make the server buffer attachment data until memory is exhausted.


Remediation

Install update from vendor's website.

References