CVE-2026-56684
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 tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. 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) >=7.2.4-rc1 <7.2.14Fix Suggestion:
Update to version 7.2.14https://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) >=7.2.14 <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) >=8.0.10 <8.1.9Fix Suggestion:
Update to version 8.1.9Related Resources (10)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
HIGH
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:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Use After Free
EPSS
Base Score:
0.52