CVE-2022-24999
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: qs@6.9.7" in its release description, is not vulnerable).
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 16%
- Percentil entre todas las CVEs puntuadas: 97
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (3)
CWE
- CWE-1321
- CWE-1321
Referencias
- https://github.com/expressjs/express/releases/tag/4.17.3
- https://github.com/ljharb/qs/pull/428
- https://github.com/n8tz/CVE-2022-24999
- https://lists.debian.org/debian-lts-announce/2023/01/msg00039.html
- https://security.netapp.com/advisory/ntap-20230908-0005/
- https://github.com/expressjs/express/releases/tag/4.17.3
- https://github.com/ljharb/qs/pull/428
- https://github.com/n8tz/CVE-2022-24999
- https://lists.debian.org/debian-lts-announce/2023/01/msg00039.html
- https://security.netapp.com/advisory/ntap-20230908-0005/
JSON original (NVD)
Mostrar
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