CVE-2026-66373 The advisory has been revoked - it doesn't affect any version of package valkey (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-VALKEY-18742319
- published13 Aug 2026
- disclosed25 Jul 2026
Introduced: 25 Jul 2026
CVE-2026-66373 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream valkey package and not the valkey package as distributed by RHEL.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2506985
- https://access.redhat.com/security/cve/CVE-2026-66373
- https://access.redhat.com/errata/RHSA-2026:43236
- https://access.redhat.com/errata/RHSA-2026:64796
- https://access.redhat.com/errata/RHSA-2026:68601
- https://github.com/redis/redis/compare/8.6.4...8.8.0
- https://github.com/redis/redis/pull/15081
- https://news.ycombinator.com/item?id=49024938
- https://x.com/Fried_rice/status/2080059356322918777
- https://lists.debian.org/debian-lts-announce/2026/08/msg00012.html
- https://github.com/berabuddies/redis-poc