What is CVE-2025-63419?

CVE-2025-63419 is a medium-severity vulnerability in Crushftp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-11-12.

How severe is CVE-2025-63419?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2025-63419 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Crushftp

CVE-2025-63419

Cross Site Scripting (XSS) vulnerability in CrushFTP 11.3.6_48. The Web-Based Server has a feature where users can share files, the feature reflects the filename to an emailbody field with no sanitations leading to HTML Injection.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-11-12 · last modified 2026-06-17.

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: 0.002 (12.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Crushftp

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

gist.github.com/MMAKINGDOM/39ded58b1e6d2d19366e76e0d5b1c851 (Exploit, Third Party Advisory)
github.com/MMAKINGDOM/CVE-2025-63419/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-63419?: CVE-2025-63419 is a medium-severity vulnerability in Crushftp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-11-12.
How severe is CVE-2025-63419?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2025-63419 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.