CVE-2026-88406: n/a
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.
AI Analysis
Technical Summary
A stack overflow vulnerability exists in the _ValidateUnion_Clauses function within the /ast/ast_validations.c source file of FalkorDB (Redis module) versions 4.20.1 to 4.20.4. This vulnerability allows an unauthenticated attacker to cause a Denial of Service by submitting specially crafted input that triggers the overflow. The CVSS 3.1 base score is 7.5, reflecting high severity due to the potential to disrupt service availability without requiring privileges or user interaction.
Potential Impact
Successful exploitation results in Denial of Service (DoS) by crashing or destabilizing the FalkorDB Redis module. There is no indication of confidentiality or integrity impact. The vulnerability can be triggered remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted input that could trigger the vulnerability.
CVE-2026-88406: n/a
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 v3.1
Score 7.5high
Affected software
pkg:github/falkordb/FalkorDBRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A stack overflow vulnerability exists in the _ValidateUnion_Clauses function within the /ast/ast_validations.c source file of FalkorDB (Redis module) versions 4.20.1 to 4.20.4. This vulnerability allows an unauthenticated attacker to cause a Denial of Service by submitting specially crafted input that triggers the overflow. The CVSS 3.1 base score is 7.5, reflecting high severity due to the potential to disrupt service availability without requiring privileges or user interaction.
Potential Impact
Successful exploitation results in Denial of Service (DoS) by crashing or destabilizing the FalkorDB Redis module. There is no indication of confidentiality or integrity impact. The vulnerability can be triggered remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted input that could trigger the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-10T00:00:00.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab19ed755bf5e2cf57bdc38
Added to database: 09/21/2026, 21:17:11 UTC
Last enriched: 09/21/2026, 21:31:41 UTC
Last updated: 09/22/2026, 00:45:59 UTC
Views: 5
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