CVE-2026-66373
High
Description
Redis before 8.8.0, in the unusual case where an authenticated attacker can execute RESTORE, allows remote code execution via a RESTORE payload where the same NACK (pending entry) is referenced by more than one consumer, because deleting both consumers via XGROUP DELCONSUMER leads to a double free. NOTE: this issue exists because of an incomplete fix for CVE-2026-25243.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Redis
PublishedJul 25, 2026
First seenJul 25, 2026
Weakness typeCWE-415CWE-415
How to fix
Update
- Redis Redis8.8.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Redis Redis | v < 8.8.0 | 8.8.0 |
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