CVE-2026-88406 | BDVDB-2026-377449 Detail

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

CWE-121 Stack-based Buffer Overflow

References#

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

Exploit#

No public exploit known

History#

Version 12026-09-21Record published in the CVE List.
Version 22026-09-22Most recent update recorded in the CVE List.

Published

Published: 2026-09-21
Last modified: 2026-09-22

Vendor information

Vendor: Not stated
Product: Not stated

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 39.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

No version data in the source record.

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

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

Metric breakdown
Attack Complexity	Low
Attack Vector	Network
Availability	High
Confidentiality	None
Integrity	None
Privileges Required	None
Scope	Unchanged
User Interaction	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).