PT-2026-45867 · Opencti · Opencti

Mattgriffin4281 · CVE-2026-35212 · Published 2026-06-02 · Updated 2026-06-05

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions OpenCTI versions prior to 7.260227.0

Description An issue exists in the rendering of email-message observable body data where the content of the body field is not appropriately sanitized. This allows for Cross-Site Scripting (XSS), a technique where malicious scripts are injected into trusted websites. The flaw requires user interaction and can be exploited by individuals sharing STIX data or through any ingester, potentially leading to Cross-Site Request Forgery (CSRF) and large-scale session theft.

Recommendations Update to version 7.260227.0.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-35212

GHSA-RG6R-X26X-63VQ

PYSEC-2026-203

Affected Products

Opencti

References · 8

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35212.json · Exploit
• https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-rg6r-x26x-63vq · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-203 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-35212 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35212 · Security Note
• https://twitter.com/CVEnew/status/2061993219127218420 · Twitter Post
• https://t.me/CVEtracker/55665 · Telegram Post
• https://t.me/cveNotify/166170 · Telegram Post