What is CVE-2018-20486?

CVE-2018-20486 is a medium-severity vulnerability in Metinfo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-12-26.

How severe is CVE-2018-20486?

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

XSS in Metinfo

CVE-2018-20486

MetInfo 6.x through 6.1.3 has XSS via the /admin/login/login_check.php url_array[] parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-12-26 · 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: 0.007 (49.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% 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: 0.007 · change: 0.000

Affected products

Metinfo

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/Ppsoft1990/Metinfo6.1.3/issues/2 (Exploit, Third Party Advisory, Issue Tracking)
forum.metinfo.cn/thread-1300-1-1.html (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2018-20486?: CVE-2018-20486 is a medium-severity vulnerability in Metinfo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-12-26.
How severe is CVE-2018-20486?: Medium severity. CVSS v3 base score is 6.1 out of 10.