CVE-2025-69873

المصدر الرسمي: NVD

العودة للثغرات المصدر الرسمي

مستوى الخطورة

عالية (High)

درجة CVSS

7,5

حالة الاستغلال KEV

غير مدرجة حاليًا

تاريخ النشر

2026-02-11

وصف الثغرة

ajv (Another JSON Schema Validator) through version 8.17.1 is vulnerable to Regular Expression Denial of Service (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation. An attacker can inject a malicious regex pattern (e.g., "^(a|a)*$") combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with $data: true for dynamic schema validation.

الأثر المحتمل

لم تتوفر تفاصيل إضافية في المصدر الرسمي.

التوصيات والمعالجة

لم تتوفر تفاصيل إضافية في المصدر الرسمي.\nراجع روابط المصدر الرسمية.

حالة الاستغلال (KEV)

لا يوجد إدراج حاليًا في قائمة KEV.

المراجع الرسمية

https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69873-ajv-ReDoS.md

English Technical Fields

Description: ajv (Another JSON Schema Validator) through version 8.17.1 is vulnerable to Regular Expression Denial of Service (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation. An attacker can inject a malicious regex pattern (e.g., "^(a|a)*$") combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with $data: true for dynamic schema validation.

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