What is CVE-2018-15899?

CVE-2018-15899 is a medium-severity vulnerability in 1234n Minicms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-08-27.

How severe is CVE-2018-15899?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in 1234n Minicms

CVE-2018-15899

An issue was discovered in MiniCMS 1.10. There is a post.php?date= XSS vulnerability.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-08-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

1234n Minicms — versions 1.10

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/bg5sbk/MiniCMS/issues/21 (Exploit, Third Party Advisory)
github.com/MarkLee131/awesome-web-pocs/blob/main/CVE-2018-15899.md

Frequently asked questions

What is CVE-2018-15899?: CVE-2018-15899 is a medium-severity vulnerability in 1234n Minicms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-08-27.
How severe is CVE-2018-15899?: Medium severity. CVSS v3 base score is 6.1 out of 10.