CVE-2026-21717
בינונית 5.9
תיאור (מקור, אנגלית)
A flaw in V8's string hashing mechanism causes integer-like strings to be hashed to their numeric value, making hash collisions trivially predictable. By crafting a request that causes many such collisions in V8's internal string table, an attacker can significantly degrade performance of the Node.js process. The most common trigger is any endpoint that calls `JSON.parse()` on attacker-controlled input, as JSON parsing automatically internalizes short strings into the affected hash table. This vulnerability affects **20.x, 22.x, 24.x, and 25.x**.
מדדים
- CVSS 3.1
-
5.9 (MEDIUM)
מקור הציון: NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — סבירות ניצול
- 0% (אחוזון 000) נכון ל-24/9/2026
- CWE
- CWE-328
מוצרים מושפעים
nodejs: node.js