CVE-2026-63639
Published:August 18, 2026
Updated:September 23, 2026
Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's RESTORE command accepts a malformed RDB stream payload that assigns one Pending Entry List NACK to multiple consumers during stream consumer-group deserialization, causing a use-after-free when one consumer is deleted while another still references the shared NACK and potentially allowing remote code execution. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.
Affected Packages
https://github.com/valkey-io/valkey.git (GITHUB):
Affected version(s) >=8.0.10 <8.1.9Fix Suggestion:
Update to version 8.1.9https://github.com/valkey-io/valkey.git (GITHUB):
Affected version(s) >=7.2.14 <8.0.10Fix Suggestion:
Update to version 8.0.10https://github.com/valkey-io/valkey.git (GITHUB):
Affected version(s) >=8.1.9 <9.0.5Fix Suggestion:
Update to version 9.0.5https://github.com/valkey-io/valkey.git (GITHUB):
Affected version(s) >=9.0.5 <9.1.1Fix Suggestion:
Update to version 9.1.1https://github.com/valkey-io/valkey.git (GITHUB):
Affected version(s) >=7.2.4-rc1 <7.2.14Fix Suggestion:
Update to version 7.2.14Related Resources (14)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Use After Free
EPSS
Base Score:
0.89