XSS in Crushftp
CVE-2025-63420
CrushFTP11 before 11.3.7_57 is vulnerable to stored HTML injection in the CrushFTP Admin Panel (Reports / "Who Created Folder"), enabling persistent HTML execution in admin sessions.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.2% 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
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gist.github.com/MMAKINGDOM/791d264c27656f0a4aa3c0ae35075e70 (Exploit, Third Party Advisory)
- github.com/MMAKINGDOM/CVE-2025-63420/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63420?
- CVE-2025-63420 is a medium-severity vulnerability in Crushftp, classified under Cross-site Scripting. CVSS score: 4.1/10. Published 2025-11-07.
- How severe is CVE-2025-63420?
- Medium severity. CVSS v3 base score is 4.1 out of 10.
- Is CVE-2025-63420 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.