CVE-2018-25248
MyBB Downloads Plugin 2.0.3 Persistent XSS via downloads.php
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.
INFO
Published Date :
April 4, 2026, 2:16 p.m.
Last Modified :
April 10, 2026, 9:21 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update the MyBB Downloads Plugin to the latest version.
- Apply input validation to the download title field.
- Encode user-supplied data before displaying it.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-25248.
| URL | Resource |
|---|---|
| https://community.mybb.com/mods.php?action=view&pid=854 | Permissions Required Product |
| https://www.exploit-db.com/exploits/44400 | Exploit VDB Entry |
| https://www.vulncheck.com/advisories/mybb-downloads-plugin-persistent-xss-via-downloads-php | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-25248 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-25248
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-25248 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-25248 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 10, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:mybb:mybb_downloads:2.0.3:*:*:*:*:mybb:*:* Added Reference Type VulnCheck: https://community.mybb.com/mods.php?action=view&pid=854 Types: Permissions Required, Product Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/44400 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/mybb-downloads-plugin-persistent-xss-via-downloads-php Types: Third Party Advisory -
New CVE Received by [email protected]
Apr. 04, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://community.mybb.com/mods.php?action=view&pid=854 Added Reference https://www.exploit-db.com/exploits/44400 Added Reference https://www.vulncheck.com/advisories/mybb-downloads-plugin-persistent-xss-via-downloads-php