CVE-2022-28527: dhcms v20170919 was discovered to contain an arbitrary folder deletion vulnerability via /admin.php?r=admin/Ad

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HIGH 8.1DOWNGRADE

CVE-2022-28527 is a high-severity flaw (CVSS 8.1) affecting dhcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

dhcms v20170919 was discovered to contain an arbitrary folder deletion vulnerability via /admin.php?r=admin/AdminBackup/del.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-22
Published	2022-04-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dhcms project

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

Am I affected?

Timeline

2022-04-26 21:15 UTCPublished CVE record published
2026-06-17 04:38 UTCUpdated Record last modified

dhcms project dhcms DOWNGRADE

Affected: 2017-09-19

Fixed in: no fixed release known

Safe to downgrade to: a release before 2017-09-19

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2017-09-19 (Debian / Ubuntu)

apt-cache madison dhcms sudo apt install dhcms=<VERSION_BEFORE_2017-09-19> sudo apt-mark hold dhcms

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

dnf --showduplicates list dhcms sudo dnf downgrade dhcms-<VERSION_BEFORE_2017-09-19> sudo dnf versionlock add dhcms

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-2022-28527?

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

Is CVE-2022-28527 being exploited?

CVE-2022-28527 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-2022-28527 affect?

CVE-2022-28527 affects dhcms. Severity is high (CVSS 8.1). dhcms v20170919 was discovered to contain an arbitrary folder deletion vulnerability via /admin.php?r=admin/AdminBackup/del.

How urgent is CVE-2022-28527?

Priority 50/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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