What is CVE-2018-25248?

CVE-2018-25248 is a high-severity vulnerability in Mybb Downloads, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-04-04.

How severe is CVE-2018-25248?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Mybb Downloads

CVE-2018-25248

MyBB Downloads Plugin 2.0.3 contains a persistent cross-site scripting vulnerability that allows regular members to inject malicious scripts through the download title field. Attackers can submit a new download with HTML/JavaScript code in the title parameter, which executes when administrators validate the download in downloads.php.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (13.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Mybb Mybb_downloads — versions 2.0.3
Mybb Downloads Plugin — versions 2.0.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (Exploit, VDB Entry, exploit)
disclosure@vulncheck.com (Permissions Required, Product, product)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2018-25248?: CVE-2018-25248 is a high-severity vulnerability in Mybb Downloads, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-04-04.
How severe is CVE-2018-25248?: High severity. CVSS v3 base score is 7.2 out of 10.