CVE-2018-25248

Name: CVE-2018-25248
Creator: NVD / NIST
Published: 2026-04-04T14:16:20.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2018-25248 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. 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.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS 4.0

5.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.22%

13.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mybb	Mybb Downloads	2.0.3

References

https://community.mybb.com/mods.php?action=view&pid=854Permissions Required, Product
https://www.exploit-db.com/exploits/44400Exploit, VDB Entry
https://www.vulncheck.com/advisories/mybb-downloads-plugin-persistent-xss-via-downloads-phpThird Party Advisory

Timeline

Published: Apr 4, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-25248?

How severe is CVE-2018-25248?

CVE-2018-25248 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2018-25248?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-25248?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST