CVE-2022-2421

CRITICAL
Published Oct 26, 20223y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Oct 26, 2022 3y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-89 SQL Injection Injection

Affected Products 4

VendorProductVersionRange
socketsocket.io-parser* <3.3.3
socketsocket.io-parser*≥3.4.0  –  <3.4.2
socketsocket.io-parser*≥4.0.0  –  <4.0.5
socketsocket.io-parser*≥4.1.0  –  <4.2.1

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.