CVE-2022-2421

Socket.io - Improper type validation in attachment parsing

Published Oct 25, 2022 CVSS 3.1 · 10 Critical EPSS 1.4% KEV · Not listed
Description
Due to improper type validation in attachment parsing the Socket.io js library, it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-7153 Due to improper type validation in attachment parsing the Socket.io js library, it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.
Github GHSA Github GHSA GHSA-qm95-pgcg-qqfq Insufficient validation when decoding a Socket.IO packet
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
DIVD
Published
Updated
Mar 11, 2025, 1:40 PM
Reserved
Jul 15, 2022, 12:00 AM
Status
Analyzed
Published
Oct 26, 2022, 10:15 AM
Modified
Jun 17, 2026, 4:41 AM