---
id: CVE-2026-35211
title: >-
  OpenCTI is an open source platform for managing cyber threat intelligence
  knowledge and observables
summary: >-
  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 u…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-94
  - CWE-863
vendor: citeum
product: opencti
affected:
  - opencti < 7.260401.0
patched:
  - opencti 7.260401.0
published: '2026-07-08'
updated: '2026-07-13'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-35211'
references:
  - url: >-
      https://github.com/OpenCTI-Platform/opencti/commit/b134ccedf9e68386723cb42197f8e1d60c3bdbd9
    label: security-advisories@github.com
  - url: 'https://github.com/OpenCTI-Platform/opencti/pull/15284'
    label: security-advisories@github.com
  - url: 'https://github.com/OpenCTI-Platform/opencti/releases/tag/7.260401.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-qpp6-p693-rmm4
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00522
epssPercentile: 0.43333
ingestedAt: '2026-07-13T15:27:34.358Z'
---

## Overview

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.

## Affected

- `opencti < 7.260401.0`

## Remediation

Upgrade past the affected range:

- `opencti 7.260401.0`