Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-5759— Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDB

Quick assessment

Affected
FalkorDB FalkorDB
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 FalkorDB 4.18.1 版本之前，RDB 图解码器（具体位于 中的 函数）存在一个双重释放（double free）和释放后使用（use-after-free）漏洞。远程攻击者若能够发送 Redis 复制命令（例如，针对未配置密码的 Redis 实例），可通过构造特殊的 RDB 数据流来触发该漏洞。该数据流的“已删除节点”缓冲区长度若非 的整数倍，即可导致拒绝服务（DoS）或在 进程中执行任意代码。 该漏洞的长度检查依赖于 宏，而此宏在发布版本（release builds）中会被编译移除。因此，在释放

CVSS 9.8 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-5759

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDB
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FalkorDB FalkorDB 0 ~ 4.18.1 cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5759

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-5759

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-5759 (2)

Vendor Pages for CVE-2026-5759 (1)

Same Patch Batch · FalkorDB · 2026-10-09 · 7 CVEs total

CVE-2026-107908 9.8 CRITICAL Pre-authentication heap out-of-bounds write in FalkorDB Bolt BoltReadHandler via RESET mes
CVE-2026-7826 9.1 CRITICAL Heap out-of-bounds read in FalkorDB BufferSerializerIOv2_ReadBuffer via crafted RDB
CVE-2026-107909 9.1 CRITICAL Pre-authentication heap out-of-bounds write in FalkorDB Bolt WebSocket frame handling via
CVE-2026-7827 8.1 HIGH Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in cra
CVE-2026-107910 8.1 HIGH Authentication bypass in FalkorDB Bolt endpoint via fail-open AUTH probe error handling
CVE-2026-107911 7.5 HIGH Type confusion in FalkorDB GRAPH.QUERY via the --bolt argument

IV. Related Vulnerabilities

Same product: FalkorDB
Same vendor: FalkorDB
Same weakness: CWE-415

V. Comments for CVE-2026-5759

No comments yet

Leave a comment