SEPTEMBER 19, 2026
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Case File

CVE-2026-63639

HIGH · CVSS 8.8 EPSS 0.89% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-18 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Valkey's RESTORE command is vulnerable to a use-after-free condition due to improper handling of malformed RDB stream payloads, allowing for potential remote code execution when multiple consumers reference a shared NACK during deserialization. Organizations using versions prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1 should prioritize upgrading to mitigate this critical security risk. This vulnerability poses a significant threat to the integrity and confidentiality of systems utilizing Valkey, making it essential for affected users to act promptly.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-63639
Severity
HIGH
CVSS
8.8
EPSS
0.89%

Original NVD Description

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.