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VulnerabilityPublished

CVE-2026-88407: FalkorDB · Out-of-bounds Read

Affects FalkorDBSource GCVE Database

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Authoritative record:CVE-2026-88407· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade to 4.20.5 soon.

Data as of 5 Nov 2026, 23:24 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 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.20.5
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. Weaponized: 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 5 Nov 2026.

What to do

Upgrade falkordb/FalkorDB to 4.20.5.

Affected software

ProductAffectedFixed in
GitHubfalkordb/FalkorDBpkg:github/falkordb/FalkorDBOther threatsAffected
  • >=4.20.1 <4.20.5
Fixed in
  • 4.20.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

An out-of-bounds read vulnerability exists in the node_token_count/relation_token_count component of FalkorDB (Redis module) versions 4.20.1 through 4.20.4. This flaw allows attackers to cause a Denial of Service (DoS) by providing crafted input to the affected module.

References

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