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CVE-2026-66373 is a double-free vulnerability in the Redis Streams consumer-group deserialization and deletion path affecting Redis versions before 8.8.0. A specially crafted RESTORE payload can create a state in which a single pending-entry (NACK) object is referenced by more than one consumer. Deleting both consumers through XGROUP DELCONSUMER then releases the same allocation twice, corrupting Redis process memory. The flaw is an incomplete fix bypass for CVE-2026-25243.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
26 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Redis remote-code-execution vulnerability triggered through a specially crafted RESTORE payload.
A vulnerability addressed by Alma Linux advisory RHSA-2026:64823 for Alma Linux 8 Redis-related packages. The plugin assigns a CVSS v3 vector of CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H and notes no known exploits.
A Redis remote-code-execution vulnerability triggered through a specially crafted RESTORE payload.
A Redis remote code execution vulnerability triggered through a specially crafted RESTORE payload. The referenced Red Hat advisory provides security updates for affected Redis packages on Red Hat Enterprise Linux 9.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.