CVE-2026-88406 Denial of service in n/a
Attackers can cause a Denial of Service in FalkorDB via crafted input triggering a stack overflow in the validation function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88406?
CVE-2026-88406 is a high-severity denial of service vulnerability in n/a, published on 21 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2026-88406?
How do I fix CVE-2026-88406?
No fix has been published for CVE-2026-88406 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-88406 being exploited?
There is no known exploitation of CVE-2026-88406 in the wild and no public exploit code.
Sources
Also known as GHSA-h6rr-j955-q95r.