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CVE-2026-35212 (GCVE-0-2026-35212)
Vulnerability from cvelistv5 – Published: 2026-06-02 21:28 – Updated: 2026-06-03 14:23
VLAI
EPSS
VEX
Title
OpenCTI has XSS in the rendering of email-message observable body data
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenCTI-Platform/opencti/secur… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenCTI-Platform | opencti |
Affected:
< 7.260227.0
|
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PYSEC-2026-203
Vulnerability from pysec - Published: 2026-06-02 22:16 - Updated: 2026-06-06 09:31
VLAI
Details
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.
Severity
6.1 (Medium)
Impacted products
| Name | purl | pycti | pkg:pypi/pycti |
|---|
Aliases
{
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"package": {
"ecosystem": "PyPI",
"name": "pycti",
"purl": "pkg:pypi/pycti"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.260227.0"
}
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"type": "ECOSYSTEM"
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],
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"GHSA-rg6r-x26x-63vq"
],
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"id": "PYSEC-2026-203",
"modified": "2026-06-06T09:31:54.080036Z",
"published": "2026-06-02T22:16:16.727Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-rg6r-x26x-63vq"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}