CVE-2023-53883: Webedition CMS v2.9.8.8 contains a remote code execution vulnerability that allows authenticated attackers to

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HIGH 7.2DOWNGRADE

CVE-2023-53883 is a high-severity flaw (CVSS 7.2) affecting webedition cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Webedition CMS v2.9.8.8 contains a remote code execution vulnerability that allows authenticated attackers to inject system commands through PHP page creation. Attackers can create a new PHP page with malicious system commands in the description field to execute arbitrary commands on the server.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-94
Published	2025-12-15
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: webedition

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

Am I affected?

Timeline

2025-12-15 21:15 UTCPublished CVE record published
2026-06-17 06:46 UTCUpdated Record last modified

webedition webedition cms DOWNGRADE

Affected: 2.9.8.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.9.8.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.9.8.8 (Debian / Ubuntu)

apt-cache madison webedition-cms sudo apt install webedition-cms=<VERSION_BEFORE_2.9.8.8> sudo apt-mark hold webedition-cms

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

dnf --showduplicates list webedition-cms sudo dnf downgrade webedition-cms-<VERSION_BEFORE_2.9.8.8> sudo dnf versionlock add webedition-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-2023-53883?

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

Is CVE-2023-53883 being exploited?

CVE-2023-53883 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-2023-53883 affect?

CVE-2023-53883 affects webedition cms. Severity is high (CVSS 7.2). Webedition CMS v2.9.8.8 contains a remote code execution vulnerability that allows authenticated attackers to inject system commands through PHP page creation. Attackers can create a new PHP page with malicious system commands in the descri

How urgent is CVE-2023-53883?

Priority 46/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2023-53884 MEDIUM 5.4 DOWNGRADE Webedition CMS v2.9.8.8 contains a stored cross-site scripting vulnerability that allows authenticated users t

References

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