CVE-2026-85522

valkey-io valkey Slot Migration cluster_migrateslots.c createSlotImportJob out-of-bounds

MEDIUM
5.3
CVSS Score
Published: September 4, 2026 at 01:45 PM UTC
Updated: September 8, 2026 at 01:31 PM UTC
1 product affected across 1 vendorValkey

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.9%
SSVC
PoC

Description

A vulnerability was detected in valkey-io valkey up to 9.5.4/9.1.0. Affected by this vulnerability is the function createSlotImportJob of the file src/cluster_migrateslots.c of the component Slot Migration. The manipulation of the argument job_name results in out-of-bounds read. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version 9.0.5 and 9.1.1 addresses this issue. The patch is identified as f4dc3ca09eb650c2fe14060090a41c524eca803f. Upgrading the affected component is advised.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 9.0.5 (unaffected)
Vendor states this is fixed in 9.1.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (9)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/398707
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/398707/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-85522
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/895119
ExploitIssue Tracking
Source: cverecord
https://github.com/valkey-io/valkey/issues/4207
Issue TrackingPatch
Source: cverecord
https://github.com/valkey-io/valkey/pull/4210

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-125CWE-119

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