CVE-2018-25250
MyBB Last User's Threads in Profile Plugin 1.2 Persistent XSS
Description
MyBB Last User's Threads in Profile Plugin 1.2 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by crafting thread subjects with script tags. Attackers can create threads with script payloads in the subject field that execute when users visit the attacker's profile page.
INFO
Published Date :
April 4, 2026, 2:16 p.m.
Last Modified :
April 20, 2026, 2:31 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 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update the MyBB Last User's Threads plugin.
- Sanitize thread subject input.
- Validate all user-submitted data.
- Test for script execution.
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-2018-25250.
| URL | Resource |
|---|---|
| https://community.mybb.com/mods.php?action=view&pid=910 | Permissions Required Product |
| https://www.exploit-db.com/exploits/44339 | Exploit VDB Entry |
| https://www.vulncheck.com/advisories/mybb-last-user-s-threads-in-profile-plugin-persistent-xss | 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-2018-25250 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-2018-25250
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-2018-25250 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-25250 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. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:mybb:last_user_threads:*:*:*:*:*:mybb:*:* versions up to (including) 1.2 Added Reference Type VulnCheck: https://community.mybb.com/mods.php?action=view&pid=910 Types: Permissions Required, Product Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/44339 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/mybb-last-user-s-threads-in-profile-plugin-persistent-xss Types: Third Party Advisory -
New CVE Received by [email protected]
Apr. 04, 2026
Action Type Old Value New Value Added Description MyBB Last User's Threads in Profile Plugin 1.2 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by crafting thread subjects with script tags. Attackers can create threads with script payloads in the subject field that execute when users visit the attacker's profile page. 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=910 Added Reference https://www.exploit-db.com/exploits/44339 Added Reference https://www.vulncheck.com/advisories/mybb-last-user-s-threads-in-profile-plugin-persistent-xss