ALPINE-CVE-2026-21717
ALPINE-CVE-2026-21717
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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**.
CVSS 5.9 · Medium · Fix available
- Published
- Updated
Stack: system
Affected products and versions
nodejs Alpine:v3.21
- Affected ranges
- ECOSYSTEM: < 22.22.2-r0
Update to 22.22.2-r0
nodejs Alpine:v3.22
- Affected ranges
- ECOSYSTEM: < 22.22.2-r0
Update to 22.22.2-r0
nodejs Alpine:v3.23
- Affected ranges
- ECOSYSTEM: < 24.14.1-r0
Update to 24.14.1-r0
nodejs Alpine:v3.24
- Affected ranges
- ECOSYSTEM: < 24.14.1-r0
Update to 24.14.1-r0