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Vulnerability record · CVE-2022-2421 · published 26 October 2022

CVE-2022-2421: Socket.io-parser sql injection vulnerability

Socket · Socket.Io Parser

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.

9.8 CVSS 3.1 Critical EPSS 1.2% · top 32.6% CWE-89 · SQL injection
9.8CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://csirt.divd.nl/CVE-2022-2421 Third Party Advisory
https://csirt.divd.nl/DIVD-2022-00045 Third Party Advisory
https://csirt.divd.nl/CVE-2022-2421 Third Party Advisory
https://csirt.divd.nl/DIVD-2022-00045 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-2421), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.