CVE-2025-5153: A vulnerability, which was classified as problematic, has been found in CMS Made Simple 2.2.21

Routine

LOW 3.5DOWNGRADE

CVE-2025-5153 is a low-severity flaw (CVSS 3.5) affecting cms made simple. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as problematic, has been found in CMS Made Simple 2.2.21. This issue affects some unknown processing of the component Design Manager Module. The manipulation of the argument Description leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	3.5 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-79, CWE-94
Published	2025-05-25
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: cmsmadesimple

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

Am I affected?

Timeline

2025-05-25 18:15 UTCPublished CVE record published
2026-06-17 09:47 UTCUpdated Record last modified

cmsmadesimple cms made simple DOWNGRADE

Affected: 2.2.21

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.21

1. Check installed version

apt-cache policy cms-made-simple || rpm -q cms-made-simple || cms-made-simple --version

2. No fixed release: DOWNGRADE to a release before 2.2.21 (Debian / Ubuntu)

apt-cache madison cms-made-simple sudo apt install cms-made-simple=<VERSION_BEFORE_2.2.21> sudo apt-mark hold cms-made-simple

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

dnf --showduplicates list cms-made-simple sudo dnf downgrade cms-made-simple-<VERSION_BEFORE_2.2.21> sudo dnf versionlock add cms-made-simple

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-2025-5153?

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

Is CVE-2025-5153 being exploited?

CVE-2025-5153 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-2025-5153 affect?

CVE-2025-5153 affects cms made simple. Severity is low (CVSS 3.5). A vulnerability, which was classified as problematic, has been found in CMS Made Simple 2.2.21. This issue affects some unknown processing of the component Design Manager Module. The manipulation of the argument Description leads to cross s

How urgent is CVE-2025-5153?

Priority 25/100. Public exploit reference

References

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