ALPINE-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 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.
ALPINE-CVE-2026-21863
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:ALPINE-CVE-2026-21863
valkey
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 7.2.12-r0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
valkey
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 8.1.6-r0
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
valkey
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 9.0.3-r0
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
valkey
Source reference: /affected/3/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 9.0.3-r0
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "7.2.12-r0"
}
]
}
],
"package": {
"name": "valkey",
"purl": "pkg:apk/alpine/valkey?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-21863.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.1.6-r0"
}
]
}
],
"package": {
"name": "valkey",
"purl": "pkg:apk/alpine/valkey?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-21863.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "9.0.3-r0"
}
]
}
],
"package": {
"name": "valkey",
"purl": "pkg:apk/alpine/valkey?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-21863.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "9.0.3-r0"
}
]
}
],
"package": {
"name": "valkey",
"purl": "pkg:apk/alpine/valkey?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-21863.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #54167 · Revision 1
- Added to Heist Feed
- Publisher date