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.

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History

Fri, 05 Jun 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Citeum
Citeum opencti
CPEs cpe:2.3:a:citeum:opencti:*:*:*:*:*:*:*:*
Vendors & Products Citeum
Citeum opencti
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Wed, 03 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 04:30:00 +0000

Type Values Removed Values Added
First Time appeared Opencti-platform
Opencti-platform opencti
Vendors & Products Opencti-platform
Opencti-platform opencti

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Description 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.
Title OpenCTI has XSS in the rendering of email-message observable body data
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-03T14:23:27.028Z

Reserved: 2026-04-01T18:48:58.937Z

Link: CVE-2026-35212

cve-icon Vulnrichment

Updated: 2026-06-03T14:23:14.679Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-02T22:16:16.727

Modified: 2026-06-05T13:07:04.890

Link: CVE-2026-35212

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-03T04:15:24Z

Weaknesses