CVE-2020-24223: Mara CMS 7.5 allows cross-site scripting (XSS) in contact.php via the theme or pagetheme parameters.

This week

MEDIUM 6.1DOWNGRADE

CVE-2020-24223 is a medium-severity flaw (CVSS 6.1) affecting mara cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mara CMS 7.5 allows cross-site scripting (XSS) in contact.php via the theme or pagetheme parameters.

Why this priority

EPSS top 3%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	14.6% (top 3%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-08-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mara cms project

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

Am I affected?

Timeline

2020-08-30 18:15 UTCPublished CVE record published
2026-06-17 03:05 UTCUpdated Record last modified

mara cms project mara cms DOWNGRADE

Affected: 7.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 7.5 (Debian / Ubuntu)

apt-cache madison mara-cms sudo apt install mara-cms=<VERSION_BEFORE_7.5> sudo apt-mark hold mara-cms

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

dnf --showduplicates list mara-cms sudo dnf downgrade mara-cms-<VERSION_BEFORE_7.5> sudo dnf versionlock add mara-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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Mara CMS 7.5 - Reflective Cross-Site Scripting
Nuclei scan template: Mara CMS 7.5 - Cross-Site Scripting

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-2020-24223?

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

Is CVE-2020-24223 being exploited?

CVE-2020-24223 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-2020-24223 affect?

CVE-2020-24223 affects mara cms. Severity is medium (CVSS 6.1). Mara CMS 7.5 allows cross-site scripting (XSS) in contact.php via the theme or pagetheme parameters.

How urgent is CVE-2020-24223?

Priority 51/100. EPSS top 3%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

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