CVE-2024-37155Public exploitNetwork attack vector

Schema disclosure via whitespace-sensitive introspection filtering

Published Nov 18, 2024 · Updated Nov 18, 2024

Improper access control in Filigran OpenCTI before 6.1.9 allows remote attackers to disclose its GraphQL schema through introspection. The secureIntrospectionPlugin searches raw query text only for whitespace-specific forms of __schema and __type, so compact queries evade rejection. No authentication or user interaction is required; successful queries expose endpoint operations and repeated requests can interrupt service.

CVSS severity6.5
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Filigran OpenCTI before 6.1.9 allows remote attackers to disclose its GraphQL schema through introspection. The secureIntrospectionPlugin searches raw query text only for whitespace-specific forms of __schema and __type, so compact queries evade rejection. No authentication or user interaction is required; successful queries expose endpoint operations and repeated requests can interrupt service.

The record

CVE
CVE-2024-37155
Published
Nov 18, 2024
Updated
Nov 18, 2024
Vendor
Filigran
Product
OpenCTI
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.1.9
  2. Affected versionversion=< 6.1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Filigran · OpenCTIversion=0 <6.1.9; version=< 6.1.9

Published CVSS scores

6.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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