Out-of-bounds Read in Lfprojects Valkey
CVE-2026-21863
Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious actor with access to the Valkey clusterbus port can send an invalid packet that may cause an out bound read, which might result in t…
Vulnerability class: Buffer Overflow
EPSS: 0.006 (42.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Lfprojects Valkey
- Valkey-io Valkey — versions < 7.2.12, >= 8.0.0, < 8.0.7, >= 8.1.0, < 8.1.6
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-21863?
- CVE-2026-21863 is a high-severity vulnerability in Lfprojects Valkey, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-02-23.
- How severe is CVE-2026-21863?
- High severity. CVSS v3 base score is 7.5 out of 10.