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Status published
Critical
CVE-2022-2421
Socket.io - Improper type validation in attachment parsing
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Thomas Rinsma (Codean)
- Victor Pasman (DIVD)
- Frank Breedijk (DIVD)
Affected Vendor
Socket.io
View all reports →Affected Software
Socket.io-Parser
Vulnerable Versions:
4.x
Timeline
Official Publish:
October 25th, 2022
Last Modified:
March 11th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H