What is CVE-2018-12431?

CVE-2018-12431 is a medium-severity vulnerability in Seacms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2018-06-14.

How severe is CVE-2018-12431?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Seacms

CVE-2018-12431

SeaCMS V6.61 has XSS via the site name parameter on an adm1n/admin_config.php page (aka a system management page).

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-06-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.1th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.005 · change: -0.001

Affected products

Seacms — versions 6.61

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/MichaelWayneLIU/seacms/blob/master/seacms.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-12431?: CVE-2018-12431 is a medium-severity vulnerability in Seacms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2018-06-14.
How severe is CVE-2018-12431?: Medium severity. CVSS v3 base score is 4.8 out of 10.