🛡️ CVE-2022-24999
🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-1321 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

qs before 6.10.3, as used in Express before 4.17.3 and other products, allows attackers to cause a Node process hang for an Express application because an __ proto__ key can be used. In many typical Express use cases, an unauthenticated remote attacker can place the attack payload in the query string of the URL that is used to visit the application, such as a[__proto__]=b&a[__proto__]&a[length]=100000000. The fix was backported to qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3, and 6.2.4 (and therefore Express 4.17.3, which has "deps: [email protected]" in its release description, is not vulnerable).

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-1321
Public Exploit ⚠️ Yes
Source NVD
Published 2022-11-26
Updated 2026-06-15
Modified 2025-04-29

Affected Packages

Software From version Fixed in
debian-linux — —
express — 4.17.3
qs — —

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