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I. Basic Information for CVE-2026-27623
Vulnerability Information

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Vulnerability Title
Valkey has Pre-Authentication DOS from malformed RESP request
Source: NVD (National Vulnerability Database)
Vulnerability Description
Valkey is a distributed key-value database. Starting in version 9.0.0 and prior to version 9.0.3, a malicious actor with network access to Valkey can cause the system to abort by triggering an assertion. When processing incoming requests, the Valkey system does not properly reset the networking state after processing an empty request. A malicious actor can then send a request that the server incorrectly identifies as breaking server side invariants, which results in the server shutting down. Version 9.0.3 fixes the issue. As an additional mitigation, properly isolate Valkey deployments so that only trusted users have access.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Valkey 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Valkey是Valkey开源的一个灵活的分布式键值数据库。 Valkey 9.0.0版本至9.0.3之前版本存在输入验证错误漏洞,该漏洞源于处理空请求后未正确重置网络状态,可能导致恶意请求触发断言使服务器关闭。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
valkey-iovalkey >= 9.0.0, < 9.0.3 -
II. Public POCs for CVE-2026-27623
#POC DescriptionSource LinkShenlong Link
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opencode/mimo-v2-pro-free · 11789 chars
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III. Intelligence Information for CVE-2026-27623
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IV. Related Vulnerabilities
V. Comments for CVE-2026-27623

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