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CVE-2026-7827— Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in 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.

FalkorDB 4.18.4 版本之前的 RDB 图解码器（位于 ）中的 函数存在一个基于栈的缓冲区溢出漏洞。该漏洞允许能够发送 Redis 复制命令的远程攻击者（例如，针对未配置密码的实例）通过提供包含攻击者控制的实体属性计数值的构造恶意 RDB 流，导致拒绝服务，并可能执行任意代码。 该属性计数值用于确定两个可变长度数组的大小，这些数组被分配在线程栈上，但缺乏上限约束。随后，解码器会用攻击者提供的值填充这些数组，从而引发栈缓冲区溢出。

CVSS 8.1 · High
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I. Basic Information for CVE-2026-7827

Vulnerability Information
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Vulnerability Title
Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FalkorDB FalkorDB 0 ~ 4.18.4 cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7827

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III. Intelligence Information for CVE-2026-7827

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Other References for CVE-2026-7827 (3)

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

CVE-2026-5759 9.8 CRITICAL Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code executio
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-2026-107910 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-121

V. Comments for CVE-2026-7827

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