VDB-368075 · CVE-2026-35212 · GHSA-rg6r-x26x-63vq

OpenCTI-Platform OpenCTI 6.9.7 body cross site scripting

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5.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in OpenCTI-Platform OpenCTI. This issue affects some unknown processing. The manipulation of the argument body leads to cross site scripting. This vulnerability is referenced as CVE-2026-35212. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OpenCTI-Platform OpenCTI. This issue affects an unknown functionality. The manipulation of the argument body with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Versions prior to 7.260227.0 are vulnerable to XSS in the rendering of email-message observable body data. The content of the body field isn't appropriately sanitized when being rendered. Does require user interaction but could be exploited by someone sharing stix or any of the ingester. This could lead to CSRF and then large scale session theft. Version 7.260227.0 contains a fix.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-35212 since 04/01/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 7.260227.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

OpenCTI-Platform

Name

OpenCTI

Version

6.9.7

Website

Product: https://github.com/OpenCTI-Platform/opencti/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenCTI 7.260227.0

Timelineinfo

04/01/2026 CVE reserved
06/02/2026 +62 days VulDB entry created
06/03/2026 +0 days Advisory disclosed
06/07/2026 +4 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-rg6r-x26x-63vq
Status: Confirmed

CVE: CVE-2026-35212 (🔒)
GCVE (CVE): GCVE-0-2026-35212
GCVE (VulDB): GCVE-100-368075

Entryinfo

Created: 06/03/2026 01:47
Updated: 06/07/2026 22:07
Changes: 06/03/2026 01:47 (68), 06/07/2026 22:07 (11)
Complete: 🔍
Cache ID: 216::103