CVE-2026-12202Public exploitNetwork attack vector

Admin-stored script execution via block CSS class

Published Jun 15, 2026 · Updated Jun 15, 2026

Stored cross-site scripting in Intelliants Subrion CMS 4.0.0 through 4.0.3 allows remote authenticated users to inject script via a block CSS class. The Blocks endpoint stores the CSS class name without neutralizing HTML markup, and later block rendering inserts that value into page output. Administrative privileges are required to save the crafted class, and execution requires another user to view the affected block; reported impact is limited to unauthorized page-content modification.

CVSS severity2.4
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Intelliants Subrion CMS 4.0.0 through 4.0.3 allows remote authenticated users to inject script via a block CSS class. The Blocks endpoint stores the CSS class name without neutralizing HTML markup, and later block rendering inserts that value into page output. Administrative privileges are required to save the crafted class, and execution requires another user to view the affected block; reported impact is limited to unauthorized page-content modification.

The record

CVE
CVE-2026-12202
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
Intelliants
Product
Subrion CMS
Classifications
CWE-79, CWE-94, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0
  2. Affected versionversion=4.0.1
  3. Affected versionversion=4.0.2
  4. Affected versionversion=4.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Intelliants · Subrion CMSversion=4.0.0; version=4.0.1; version=4.0.2; version=4.0.3

Published CVSS scores

1.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
2.4VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
3.3VulDBAV:N/AC:L/Au:M/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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