SQL Injection in Siteserver Sscms
CVE-2026-7435
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.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.003
Affected products
- Siteserver Sscms — versions 7.4.0
Weakness classification (CWE)
References
- github.com/siteserver/cms (product)
- github.com/siteserver/cms/issues/3891 (issue-tracking)
- www.vulncheck.com/advisories/sscms-sql-injection-via-stl-sqlcontent-querystring (third-party-advisory)
Frequently asked questions
- What is CVE-2026-7435?
- CVE-2026-7435 is a high-severity vulnerability in Siteserver Sscms, classified under SQL Injection. CVSS score: 7.2/10. Published 2026-04-30.
- How severe is CVE-2026-7435?
- High severity. CVSS v3 base score is 7.2 out of 10.