Siteserver SSCMS 7.4.0 /api/stl/actions/dynamic sql injection

Summaryinfo

A vulnerability classified as critical has been found in Siteserver SSCMS 7.4.0. Impacted is an unknown function of the file /api/stl/actions/dynamic. Performing a manipulation results in sql injection. This vulnerability is reported as CVE-2026-7435. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Siteserver SSCMS 7.4.0. This affects some unknown processing of the file /api/stl/actions/dynamic. The manipulation with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

SSCMS v7.4.0 contains a SQL injection vulnerability in the stl:sqlContent tag where the queryString attribute is passed directly to database execution without parameterization or sanitization. Attackers can craft encrypted payloads submitted to the /api/stl/actions/dynamic endpoint to execute arbitrary SQL statements, leading to unauthorized database access, data disclosure, authentication bypass, data modification, or complete database compromise.

The weakness was disclosed by Hss94531. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-7435 since 04/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/28/2026). The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26437). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Siteserver

Name

• SSCMS

Version

• 7.4.0

CPE 2.3info

• 🔒

CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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