CVE-2026-88406: FalkorDB · Stack-based Buffer Overflow
Affects FalkorDBSource CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:NExploitation evidence
Disclosed: evidence found.
CVE published 21 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubfalkordb/FalkorDBpkg:github/falkordb/FalkorDBOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, avoid processing untrusted input that could trigger the vulnerability.
Description
FalkorDB (Redis module) versions 4.20.1 through 4.20.4 contain a stack overflow vulnerability in the _ValidateUnion_Clauses function. This flaw can be triggered by crafted input to cause a denial of service (DoS) condition. The vulnerability has a high severity rating with a CVSS score of 7.5. No known exploits are reported in the wild. There is no explicit information about a patch or fix availability.