CVE-2020-21648: WDJA CMS v1.5.2 contains an arbitrary file deletion vulnerability in the component admin/cache/manage.php.

This week

CRITICAL 9.1REMOTEDOWNGRADE

CVE-2020-21648 is a critical-severity flaw (CVSS 9.1) affecting wdja cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WDJA CMS v1.5.2 contains an arbitrary file deletion vulnerability in the component admin/cache/manage.php.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 29%)
CISA exploited list	No
Published	2021-10-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wdja

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

Am I affected?

Timeline

2021-10-06 22:15 UTCPublished CVE record published
2026-06-17 03:03 UTCUpdated Record last modified

wdja wdja cms DOWNGRADE

Affected: 1.5.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5.2

1. Check installed version

apt-cache policy wdja-cms || rpm -q wdja-cms || wdja-cms --version

2. No fixed release: DOWNGRADE to a release before 1.5.2 (Debian / Ubuntu)

apt-cache madison wdja-cms sudo apt install wdja-cms=<VERSION_BEFORE_1.5.2> sudo apt-mark hold wdja-cms

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

dnf --showduplicates list wdja-cms sudo dnf downgrade wdja-cms-<VERSION_BEFORE_1.5.2> sudo dnf versionlock add wdja-cms

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-2020-21648?

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

Is CVE-2020-21648 being exploited?

CVE-2020-21648 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-2020-21648 affect?

CVE-2020-21648 affects wdja cms. Severity is critical (CVSS 9.1). WDJA CMS v1.5.2 contains an arbitrary file deletion vulnerability in the component admin/cache/manage.php.

How urgent is CVE-2020-21648?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2020-23631 MEDIUM 6.1 DOWNGRADE Cross-site request forgery (CSRF) in admin/global/manage.php in WDJA CMS 1.5 allows remote attackers to conduc
CVE-2020-21658 MEDIUM 6.5 DOWNGRADE A Cross-Site Request Forgery (CSRF) in WDJA CMS v1.5.2 allows attackers to arbitrarily add administrator accou
CVE-2020-20982 CRITICAL 9.6 DOWNGRADE Cross Site Scripting (XSS) vulnerability in shadoweb wdja v1.5.1, allows attackers to execute arbitrary code a

References

← Back to latest CVEs