CVE-2026-7429 Details
Description
SSCMS v7.4.0 contains a reflected cross-site scripting vulnerability in the STL processing endpoint that allows attackers to execute arbitrary JavaScript by crafting malicious STL template payloads that are decrypted and returned without proper sanitization. Attackers can exploit improper output encoding in the /api/stl/actions/dynamic endpoint to inject executable JavaScript into JSON responses, leading to session hijacking, phishing attacks, and unauthorized actions performed on behalf of users.
A reflected cross-site scripting vulnerability has been identified in SSCMS version 7.4.0. This issue resides within the STL processing endpoint, specifically the /api/stl/actions/dynamic route. The vulnerability allows attackers to execute arbitrary JavaScript by creating malicious STL template payloads. These payloads are decrypted and returned without adequate sanitization, exploiting improper output encoding in JSON responses. This could lead to session hijacking, phishing attacks, and unauthorized actions performed on behalf of users.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 30, 2026CISA-ADP
Assessed Apr 30, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/siteserver/cms/issues/3892 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/siteserver/cms | [email protected] | Source CodeVendor |
| https://github.com/siteserver/cms/issues/3892 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://www.vulncheck.com/advisories/sscms-reflected-cross-site-scripting-via-stl-processing | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SSCMS | <= 7.4.0 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | New CVE Received | [email protected] |