CVE-2026-35212— OpenCTI has XSS in the rendering of email-message observable body data
Possible ATT&CK Techniques 2AI
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I. Basic Information for CVE-2026-35212
Vulnerability Information
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Vulnerability Title
OpenCTI has XSS in the rendering of email-message observable body data
Source: NVD (National Vulnerability Database)
Vulnerability 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 (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OpenCTI-Platform | opencti | < 7.260227.0 | - |
II. Public POCs for CVE-2026-35212
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-35212 (1)
IV. Related Vulnerabilities
Same product: opencti
- CVE-2026-44730
OpenCTI: Privilege escalation via graphQL API abusable by or - CVE-2026-27960
OpenCTI privilege escalation and unauthenticated access via - CVE-2026-39980
OpenCTI affected by RCE via notifier template - CVE-2026-21886
OpenCTI's GraphQL Mutations Allow Deletion of Unrelated Enti - CVE-2026-21887
OpenCTI has a Semi-Blind SSRF via Unvalidated External URL i
Same vendor: OpenCTI-Platform
- CVE-2026-44730
OpenCTI: Privilege escalation via graphQL API abusable by or - CVE-2026-27960
OpenCTI privilege escalation and unauthenticated access via - CVE-2026-39980
OpenCTI affected by RCE via notifier template - CVE-2026-21886
OpenCTI's GraphQL Mutations Allow Deletion of Unrelated Enti - CVE-2026-21887
OpenCTI has a Semi-Blind SSRF via Unvalidated External URL i
Same weakness: CWE-79
- CVE-2026-7421
Passeum Ticketing <= 1.0 - Authenticated (Administrator+) St - CVE-2026-40108
GLPI Vulnerable to Stored XSS in ITIL Costs - CVE-2026-42849
authentik: Reflected XSS in SFE AutosubmitStage allows IDP a - CVE-2026-5385
GLPI 11.0.0 - Stored XSS in knowledge base - CVE-2026-33245
React Router vulnerable to XSS in unstable RSC redirect hand
V. Comments for CVE-2026-35212
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