XSS in Myupb Ultimate PHP Board
CVE-2025-61539
Cross site scripting (XSS) vulnerability in Ultimate PHP Board 2.2.7 via the u_name parameter in lostpassword.php.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.1% 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
- Myupb Ultimate PHP Board — versions 2.2.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/PHP-Outburst/myUPB (Product)
- github.com/bugdotexe/Vulnerability-Research/tree/main/CVE-2025-61539 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-61539?
- CVE-2025-61539 is a medium-severity vulnerability in Myupb Ultimate PHP Board, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-10-16.
- How severe is CVE-2025-61539?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2025-61539 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.