CVE-2026-27623
7.5 · HIGHOverview
CVE-2026-27623 is a high-severity vulnerability affecting lfprojects valkey. It was published on February 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from lfprojects. Update valkey to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| lfprojects | valkey | >= 9.0.0, < 9.0.3 | Affected |
Frequently Asked Questions
What is CVE-2026-27623?
CVE-2026-27623 is a high-severity vulnerability affecting lfprojects valkey. It was published on February 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-27623?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-27623?
Check the references section for vendor advisories and patches from lfprojects. Update valkey to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-27623?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-27623 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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