Vulnerability Description
Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redis | Redis | < 8.6.3 |
Related Weaknesses (CWE)
References
- https://github.com/redis/redis/releases/tag/8.6.3Release Notes
- https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826MitigationVendor Advisory
FAQ
What is CVE-2026-23631?
CVE-2026-23631 is a vulnerability with a CVSS score of 8.1 (HIGH). Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-afte...
How severe is CVE-2026-23631?
CVE-2026-23631 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23631?
Check the references section above for vendor advisories and patch information. Affected products include: Redis Redis.