CVE-2026-27623Valkey is a distributed key-value database.
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-20, CWE-617
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
lfprojects valkey lfprojects:valkey | from 9.0.0 before 9.0.3 | NVD |
References
- https://github.com/valkey-io/valkey/security/advisories/GHSA-93p9-5vc7-8wgrvendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-27623
- https://bugzilla.redhat.com/show_bug.cgi?id=2442021
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27623.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.