VDB
ALPINE-CVE-2021-32626
ALPINE-CVE-2021-32626
PUBLISHED
CVSS 8.800000190734863 HIGH
Redis is an open source, in-memory database that persists on disk. In affected versions specially crafted Lua scripts executing in Redis can cause the heap-based Lua stack to be overflowed, due to incomplete checks for this condition. This can result with heap corruption and potentially remote code execution. This problem exists in all versions of Redis with Lua scripting support, starting from 2.6. The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14. For users unable to update an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
Risk Scores
CVSS v3.1
8.800000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.12 | redis | 5.0.9-r0, 3.0.0-r0, 2.8.9-r2 |
| Alpine:v3.19 | redis | 2.8.12-r0, 0, 2.4.14-r1 |
| Alpine:v3.14 | redis | 4.0.9-r2, 4.0.9-r1, 4.0.9-r0 |
| Alpine:v3.15 | redis | 3.2.7-r0, 3.0.5-r1, 3.2.0-r0 |
| Alpine:v3.13 | redis | 4.0.9-r2, 4.0.9-r1, 4.0.9-r0 |
| Alpine:v3.16 | redis | 3.2.4-r0, 0, 2.4.14-r0 |
| Alpine:v3.18 | redis | 3.0.0-r1, 3.0.1-r0, 3.0.2-r0 |
| Alpine:v3.11 | redis | 3.0.7-r0, 5.0.7-r0, 5.0.5-r0 |
| Alpine:v3.17 | redis | 3.0.5-r1, 6.2.5-r0, 6.2.4-r0 |
Timeline
- Oct 4, 2021 CVE Published
- Nov 19, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch