CVE-2018-25309
MyBB Recent threads 17.0 Persistent Cross-Site Scripting
- State
- Published
- Severity
- 5.1 Medium
- Published
- Apr 29, 2026
- Updated
- May 24, 2026
- Reserved
- Apr 29, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | 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 | VulnCheck |
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
MyBB Recent threadsmybb |
|
References
- ExploitDB-44420exploit
- Product Referenceproduct
- VulnCheck Advisory: MyBB Recent threads 17.0 Persistent Cross-Site Scriptingthird-party-advisory
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