CVE-2026-66373

State: Published
Severity: 7.5 High
Published: Jul 25, 2026
Updated: Aug 7, 2026
Reserved: Jul 25, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	mitre

Weaknesses

CWE-415 Double Free

Affected Products

Product	Versions
RedisRedis	before 8.8.0Affected

References

https://github.com/redis/redis/pull/15081
https://github.com/redis/redis/compare/8.6.4...8.8.0
https://x.com/Fried_rice/status/2080059356322918777
https://github.com/berabuddies/redis-poc
https://news.ycombinator.com/item?id=49024938
https://lists.debian.org/debian-lts-announce/2026/08/msg00012.html

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.