CVE-2025-51651: An authenticated arbitrary file download vulnerability in the component /admin/Backups.php of Mccms v2.7.0 all

Routine

MEDIUM 5.5DOWNGRADE

CVE-2025-51651 is a medium-severity flaw (CVSS 5.5) affecting mccms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An authenticated arbitrary file download vulnerability in the component /admin/Backups.php of Mccms v2.7.0 allows attackers to download arbitrary files via a crafted GET request.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-598
Published	2025-07-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: chshcms

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

Am I affected?

Timeline

2025-07-14 17:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

chshcms mccms DOWNGRADE

Affected: 2.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.7 (Debian / Ubuntu)

apt-cache madison mccms sudo apt install mccms=<VERSION_BEFORE_2.7> sudo apt-mark hold mccms

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mccms sudo dnf downgrade mccms-<VERSION_BEFORE_2.7> sudo dnf versionlock add mccms

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-2025-51651?

mccms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-51651 being exploited?

CVE-2025-51651 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-2025-51651 affect?

CVE-2025-51651 affects mccms. Severity is medium (CVSS 5.5). An authenticated arbitrary file download vulnerability in the component /admin/Backups.php of Mccms v2.7.0 allows attackers to download arbitrary files via a crafted GET request.

How urgent is CVE-2025-51651?

Priority 28/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-50234 MEDIUM 6.5 DOWNGRADE MCCMS v2.7.0 has an SSRF vulnerability located in the index() method of the sys\apps\controllers\api\Gf.php fi
CVE-2025-5328 MEDIUM 5.4 DOWNGRADE A vulnerability was found in chshcms mccms 2.7
CVE-2025-5327 MEDIUM 6.3 DOWNGRADE A vulnerability was found in chshcms mccms 2.7
CVE-2025-51818 MEDIUM 5.4 DOWNGRADE MCCMS 2.7.0 is vulnerable to Arbitrary file deletion in the Backups.php component

References

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