XSS in Dragonexpert Recent Threads On Index
CVE-2018-25309
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Dragonexpert Recent Threads On Index — versions 17.0
- Mybb Recent Threads — versions 17.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/44420 (Exploit, VDB Entry, exploit)
- community.mybb.com/mods.php (Product, product)
- www.vulncheck.com/advisories/mybb-recent-threads-persistent-cross-site-scripting (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2018-25309?
- CVE-2018-25309 is a high-severity vulnerability in Dragonexpert Recent Threads On Index, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-04-29.
- How severe is CVE-2018-25309?
- High severity. CVSS v3 base score is 7.2 out of 10.