CVE-2022-36021: Redis

Medium severity, CVSS 5.5. EPSS: 59.8% chance of exploitation in the next 30 days.

Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11, 7.0.9.

Affected products

• Redis Redis: before 6.0.18 (fixed in 6.0.18); from 6.2.0, before 6.2.11 (fixed in 6.2.11); from 7.0.0, before 7.0.9 (fixed in 7.0.9)

Published 2023-03-01. Last modified 2026-06-17.