CVE-2025-63420: CrushFTP11 before 11.3.7_57 is vulnerable to stored HTML injection in the CrushFTP Admin Panel (Reports / "Who

Routine

MEDIUM 4.1UPGRADE

CVE-2025-63420 is a medium-severity flaw (CVSS 4.1) affecting crushftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-11-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: crushftp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-07 22:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

crushftp crushftp UPGRADE

Affected: >= 11.0.1 and < 11.3.7_57

Fixed in: 11.3.7_57

Safe to downgrade to: a release before 11.0.1

1. Check installed version

apt-cache policy crushftp || rpm -q crushftp || crushftp --version

2. UPGRADE to 11.3.7_57 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade crushftp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade crushftp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 11.0.1 (Debian / Ubuntu)

apt-cache madison crushftp sudo apt install crushftp=<VERSION_BEFORE_11.0.1> sudo apt-mark hold crushftp

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list crushftp sudo dnf downgrade crushftp-<VERSION_BEFORE_11.0.1> sudo dnf versionlock add crushftp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-63420?

crushftp: upgrade to 11.3.7_57. Exact commands for each OS are on this page.

Is CVE-2025-63420 being exploited?

CVE-2025-63420 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-63420 affect?

CVE-2025-63420 affects crushftp. Severity is medium (CVSS 4.1). 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.

How urgent is CVE-2025-63420?

Priority 25/100. Public exploit reference

Related CVEs

CVE-2025-63419 MEDIUM 6.1 UPGRADE Cross Site Scripting (XSS) vulnerability in CrushFTP 11.3.6_48
CVE-2025-54309 CRITICAL 9.0 EXPLOITED UPGRADE CrushFTP Unprotected Alternate Channel Vulnerability
CVE-2025-32103 MEDIUM 5.0 UPGRADE CrushFTP 9.x and 10.x through 10.8.4 and 11.x through 11.3.1 allows directory traversal via the /WebInterface/
CVE-2025-32102 MEDIUM 5.0 UPGRADE CrushFTP 9.x and 10.x through 10.8.4 and 11.x through 11.3.1 allows SSRF via the host and port parameters in a
CVE-2025-31161 CRITICAL 9.8 EXPLOITED UPGRADE CrushFTP Authentication Bypass Vulnerability

References

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