CVE-2026-27623

published 2026-02-23

CVE-2026-27623: 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…

Priority P3 46 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
debian	valkey	—	—
lfprojects	valkey	>= 0 < 9.0.3-r0	9.0.3-r0
lfprojects	valkey	>= 9.0.0 < 9.0.3	9.0.3
msrc	azl3_valkey_8.0.7-1_on_azure_linux_3.0	—	—
valkey-io	valkey	—	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

osv 7.5 HIGH

vendor_debian 7.5 LOW

vendor_msrc 7.5 HIGH

vendor_redhat 7.5 HIGH

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CWE-20 CWE-617