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VulnerabilityPublished Updated

CVE-2026-88406: FalkorDB · Stack-based Buffer Overflow

Affects FalkorDBSource CVE Database V5

0

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
GitHubfalkordb/FalkorDBpkg:github/falkordb/FalkorDBOther threatsAffected
  • >=4.20.1 <=4.20.4
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.

References

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