CVE-2026-5759

A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.1 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 or execute arbitrary code in the redis-server process by supplying a crafted RDB stream whose deleted-nodes buffer length is not a multiple of sizeof(NodeID). The length check relies on ASSERT(), which is compiled out in release builds, so the function continues after freeing the buffer, reading it and freeing it a second time.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c
https://github.com/FalkorDB/FalkorDB/pull/1843
https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1

Configurations

No configuration.

History

09 Oct 2026, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-09 05:16

Updated : 2026-10-13 18:17

NVD link : CVE-2026-5759

Mitre link : CVE-2026-5759

CVE.ORG link : CVE-2026-5759

JSON object : View

Products Affected

No product.

CWE

CWE-415

Double Free

CWE-416

Use After Free

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