CVE-2026-88406

7.5 HIGHpublic exploit available

Published 2026-09-21 · Updated 2026-09-22

AI risk analysis

Summary: The flaw in FalkorDB (Redis module) allows attackers to cause a Denial of Service via a stack overflow from a crafted input, compromising system availability.
Exploitability: Exploitation requires crafting a specific input and access to the affected version range; moderate skill level needed.
Blast radius: If exploited, it could lead to service disruption for systems using FalkorDB, impacting operational continuity.
Prioritized remediation: Upgrade FalkorDB to a non-affected version immediately or apply vendor patches.

dosstack-overflowredis

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

FalkorDB (Redis module) v4.20.1 to v4.20.4 was discovered to contain a stack overflow in the _ValidateUnion_Clauses function (/ast/ast_validations.c). This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-121

Public exploit & PoC references

https://github.com/FalkorDB/FalkorDB/issues/2329

References

https://github.com/FalkorDB/FalkorDB/issues/2329

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.