What is CVE-2026-7429?

CVE-2026-7429 is a medium-severity vulnerability in Siteserver Sscms, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-04-30.

How severe is CVE-2026-7429?

Medium severity. CVSS v3 base score is 4.6 out of 10.

XSS in Siteserver Sscms

CVE-2026-7429

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 p…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (10.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Siteserver Sscms — versions 7.4.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-7429?: CVE-2026-7429 is a medium-severity vulnerability in Siteserver Sscms, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-04-30.
How severe is CVE-2026-7429?: Medium severity. CVSS v3 base score is 4.6 out of 10.