Riskcovery

CVE-2026-35211

OpenCTI: Elasticsearch Painless Script Injection via GraphQL `script` filter operator allows authenticated user to exfiltrate data and cause DoS

State
Published
Severity
6.5 Medium
Published
Jul 8, 2026
Updated
Jul 10, 2026
Reserved
Apr 1, 2026

Read the record on cve.org

Description

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 7.260401.0, the OpenCTI GraphQL API exposes a script filter operator in its FilterOperator enum that allows any authenticated user with the KNOWLEDGE capability to pass user-supplied Elasticsearch Painless script values directly into search queries without validation or sanitization, allowing computationally expensive scripts to consume cluster CPU resources and degrade or deny service for all users. This issue is fixed in version 7.260401.0.

Scores

CVSSScoreVectorSource
3.16.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HGitHub_M

Weaknesses

  • CWE-94 Improper Control of Generation of Code ('Code Injection')
  • CWE-863 Incorrect Authorization

Affected Products

ProductVersions
openctiOpenCTI-Platform
  • < 7.260401.0Affected

References

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