CVE-2026-21863
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Malformed Valkey Cluster bus message can lead to Remote DoS
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 the system crashing. The Valkey clusterbus packet processing code does not validate that a clusterbus ping extension packet is located within buffer of the clusterbus packet before attempting to read it. Versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12 fix the issue. As an additional mitigation, don't expose the cluster bus connection directly to end users, and protect the connection with its own network ACLs.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
valkey
- Vendor
- valkey-io
- Product
- valkey
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| < 7.2.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 8.0.0, < 8.0.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 8.1.0, < 8.1.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 9.0.0, < 9.0.2 | affected | Unavailable | Unavailable | Unavailable | None listed |