CVE-2025-67733 HIGH

CVE-2025-67733: Valkey Affected by RESP Protocol Injection via Lua error_reply

Vendor Valkey-Io
Product valkey
Weakness CWE-74
Published February 23, 2026
Last update June 30, 2026

CVSS base score

8.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

What the vulnerability does

01Description

Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious user can use scripting commands to inject arbitrary information into the response stream for the given client, potentially corrupting or returning tampered data to other users on the same connection. The error handling code for lua scripts does not properly handle null characters. Versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12 fix the issue.

Key dates

02Disclosure timeline

February 23, 2026 CVE published
June 30, 2026 Record updated