CVE-2026-35212

6.1 MEDIUM

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables

Published: 2026-06-02 · Last updated: 2026-06-05

Severity and scoring

CVSS: 6.1 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE: CWE-79

Affected products

Vendor	Product
citeum	opencti

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-35212
[Vendor advisory]https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-rg6r-x26x-63vq

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CVE-2026-44730 — OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables (7.2 HIGH)

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