CVE-2026-44730: OpenCTI Privilege Escalation Vulnerability

HIGH
Advisory Identifier: GHSA-q537-qhj4-wcjx
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CVSS 7.2
CWE-284
Published
Advisory Summary

CVE-2026-44730 is a HIGH (CVSS 7.2) privilege escalation vulnerability (CWE-284: Improper Access Control) affecting OpenCTI libraries in the PyPI ecosystem. The issue involves privilege escalation via graphql api is abusable by organization admins, due to incorrect acl on useredit relationadd. Remediation is available by upgrading affected packages to version 6.9.7.

CVE-2026-44730 at a Glance

CVE Identifier CVE-2026-44730
GHSA Identifier GHSA-q537-qhj4-wcjx
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-284: Improper Access Control
Affected Product OpenCTI
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-44730

To remediate this vulnerability, upgrade all affected OpenCTI dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

pycti fixed: 6.9.7 
pip install pycti>=6.9.7
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show pycti

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-44730, inspect your installed packages using pip:

pip show pycti

Analyze the terminal output to locate any version of OpenCTI in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.9.7), your application is affected.

Note: The pip show pycti command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In OpenCTI, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary An organization admin can escalate their privileges by adding a user from a different organization with higher privileges, to their own organization. ### Impact Full platform access, access to sensitive or proprietary information.

CVE-2026-44730 Affected OpenCTI Versions

1 component(s)
Fixed Versions:
6.9.7
Product / Package Ecosystem Affected Versions Fixed Version
pycti
pypi/pycti
PyPI
< 6.9.7
6.9.7

References

GitHub Advisory / Wiki ADVISORY
https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-q537-qhj4-wcjx
NVD — CVE-2026-44730 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44730
OpenCTI Source Repository REPOSITORY
https://github.com/OpenCTI-Platform/opencti
OpenCTI Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/pycti/PYSEC-2026-167.yaml

Frequently Asked Questions

What is CVE-2026-44730?
CVE-2026-44730 is a security vulnerability in OpenCTI involving Privilege escalation via graphQL API is abusable by organization admins, due to incorrect ACL on userEdit relationAdd under CWE-284: Improper Access Control.
Which OpenCTI versions are affected?
Affected versions include releases prior to 6.9.7 across affected packages: pycti.
What version fixes CVE-2026-44730?
Upgrading to 6.9.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pycti affected?
Yes, pycti is affected in releases prior to 6.9.7. Upgrade your dependency to 6.9.7 or later.
What is the CVSS score of CVE-2026-44730?
CVE-2026-44730 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-44730?
CVE-2026-44730 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check PyPI dependencies for CVE-2026-44730?
Run the dependency tree command: 'pip show pycti'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q537-qhj4-wcjx",
  "modified" : "2026-05-28T18:08:59Z",
  "published" : "2026-05-28T18:08:59Z",
  "aliases" : [ "CVE-2026-44730" ],
  "summary" : "OpenCTI: Privilege escalation via graphQL API is abusable by organization admins, due to incorrect ACL on userEdit relationAdd",
  "details" : "### Summary\nAn organization admin can escalate their privileges by adding a user from a different organization with higher privileges, to their own organization.\n\n### Impact\nFull platform access, access to sensitive or proprietary information.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "pycti"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.9.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-q537-qhj4-wcjx"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44730"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OpenCTI-Platform/opencti"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/pycti/PYSEC-2026-167.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-28T18:08:59Z",
    "nvd_published_at" : "2026-05-26T18:16:51Z"
  }
}