What’s Vulnerable › Vulnerabilities

CVE-2021-31294

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-07-15 · updated 2026-06-17
• Weakness: CWE-617

Description

Redis before 6cbea7d allows a replica to cause an assertion failure in a primary server by sending a non-administrative command (specifically, a SET command). NOTE: this was fixed for Redis 6.2.x and 7.x in 2021. Versions before 6.2 were not intended to have safety guarantees related to this.

Affected products

• Redis: before 6.2.0 — fixed in 6.2.0

How to fix

Upgrade to a fixed version: Redis 6.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/redis/redis/commit/46f4ebbe842620f0976a36741a72482620aa4b48
• https://github.com/redis/redis/commit/6cbea7d29b5285692843bc1c351abba1a7ef326f
• https://github.com/redis/redis/issues/8712
• https://security.netapp.com/advisory/ntap-20230814-0007/
• https://github.com/redis/redis/commit/46f4ebbe842620f0976a36741a72482620aa4b48
• https://github.com/redis/redis/commit/6cbea7d29b5285692843bc1c351abba1a7ef326f
• https://github.com/redis/redis/issues/8712
• https://security.netapp.com/advisory/ntap-20230814-0007/

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