Description

MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScript in the browsers of all users viewing the index page.

INFO

Published Date :

2026-04-29T19:24:39.993Z

Last Modified :

2026-04-30T13:07:56.870Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2018-25309 vulnerability.

Vendors Products
Dragonexpert
  • Recent Threads On Index
Mybb
  • Mybb
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2018-25309.

URL Resource
https://community.mybb.com/mods.php?action=view&pid=191 cve-icon cve-icon
https://www.exploit-db.com/exploits/44420 cve-icon cve-icon
https://www.vulncheck.com/advisories/mybb-recent-threads-persistent-cross-site-scripting cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact