Description
A stack-based buffer overflow in the _RdbLoadEntity function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.4 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service and possibly execute arbitrary code by supplying a crafted RDB stream with an attacker-controlled entity property count. The count sizes two variable-length arrays on the thread stack with no upper bound, and the decoder then fills them with attacker-supplied values.
Published: 2026-10-09
Score: 9.2 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

Upgrade FalkorDB to version 4.18.4 or later.

Vendor Workaround

Require authentication on the Redis/FalkorDB instance (requirepass or ACLs), restrict or rename the REPLICAOF/SLAVEOF commands so untrusted clients cannot use them, and do not expose the instance to untrusted networks.

Tracking

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Advisories

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History

Fri, 09 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Description A stack-based buffer overflow in the _RdbLoadEntity function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.4 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service and possibly execute arbitrary code by supplying a crafted RDB stream with an attacker-controlled entity property count. The count sizes two variable-length arrays on the thread stack with no upper bound, and the decoder then fills them with attacker-supplied values.
Title Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB
First Time appeared Falkordb
Falkordb falkordb
Weaknesses CWE-121
CPEs cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*
Vendors & Products Falkordb
Falkordb falkordb
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Falkordb Falkordb
cve-icon MITRE

Status: PUBLISHED

Assigner: securin

Published:

Updated: 2026-10-09T04:04:29.094Z

Reserved: 2026-05-05T02:50:42.544Z

Link: CVE-2026-7827

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-09T05:16:45.327

Modified: 2026-10-09T05:16:45.447

Link: CVE-2026-7827

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-09T05:30:08Z

Weaknesses