CVE-2026-85522

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

State: Published
Severity: 6.9 Medium
Published: Sep 4, 2026
Updated: Sep 4, 2026
Reserved: Sep 4, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
3.0	5.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
2.0	5.0 Medium	AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-125 Out-of-Bounds Read
CWE-119 Memory Corruption

Affected Products

Product	Versions
valkeyvalkey-io	9.0Affected 9.1.0Affected 9.5.0Affected 9.5.1Affected 9.5.2Affected 9.5.3Affected 9.5.4Affected 9.0.5Not affected 9.1.1Not affected

References

VDB-398707 | valkey-io valkey Slot Migration cluster_migrateslots.c createSlotImportJob out-of-boundsvdb-entrytechnical-description
VDB-398707 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-85522 | CVE Analysis and Reportthird-party-advisory
Submit #895119 | Valkey Project Valkey 9.1.0 Out-of-bounds Readthird-party-advisory
https://github.com/valkey-io/valkey/issues/4207exploitissue-tracking
https://github.com/valkey-io/valkey/pull/4210issue-trackingpatch
https://github.com/valkey-io/valkey/commit/f4dc3ca09eb650c2fe14060090a41c524eca803fpatch
https://github.com/valkey-io/valkey/releases/tag/9.1.1patch
https://github.com/valkey-io/valkey/product

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