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CrushftpApplication

CVE-2025-63419

MEDIUM · 6.1 CVSS v3.1 Published 2025-11-12
Fix available
A fix is available. Upgrade to 11.3.7_60 or later.
See remediation →
68/100
Remediation priority · Elevated
Public exploit Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-79

Untrusted input is placed into a web page without being neutralised, so an attacker's markup or script executes in another user's browser. That can hijack sessions, capture keystrokes, or silently perform actions as the victim. Fixing it properly means context-aware output encoding everywhere data meets HTML, backed by a content-security policy as a second line of defence.

General guidance for the cross-site scripting (xss) class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
CrushftpApplication
Affected:< 11.3.7_60

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 11.3.7_60 or later
Fixed in 11.3.7_60
Recommended fix Moderate confidence

11.3.7_60

  1. Back up your current CrushFTP installation, configuration files, and user data before proceeding with the upgrade.
  2. Download CrushFTP version 11.3.7_60 or later from the official CrushFTP website (crushftp.com) or your preferred distribution channel.
  3. Stop the CrushFTP service to ensure a clean upgrade process.
  4. Install the update following CrushFTP's standard upgrade procedure - typically by running the installer or replacing the application files while preserving your configuration.
  5. Restart the CrushFTP service after the upgrade is complete.
  6. Verify the fix by testing the file sharing feature: create a file share and confirm that filenames are properly sanitized in the email body field and no HTML/JavaScript can be injected.
  7. Monitor the server logs and user feedback for any post-upgrade issues.
Caveat Standard minor version upgrades in CrushFTP typically do not introduce breaking changes, but always test in a staging environment first

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $900. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-63419 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data