CVE-2018-5216: Radiant CMS 1.1.4 has XSS via crafted Markdown input in the part_body_content parameter to an admin/pages/*/ed

Routine

MEDIUM 5.4DOWNGRADE

CVE-2018-5216 is a medium-severity flaw (CVSS 5.4) affecting radiant cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Radiant CMS 1.1.4 has XSS via crafted Markdown input in the part_body_content parameter to an admin/pages/*/edit resource.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-01-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: radiantcms

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

Am I affected?

Timeline

2018-01-04 19:29 UTCPublished CVE record published
2026-06-17 01:59 UTCUpdated Record last modified

radiantcms radiant cms DOWNGRADE

Affected: 1.1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1.4 (Debian / Ubuntu)

apt-cache madison radiant-cms sudo apt install radiant-cms=<VERSION_BEFORE_1.1.4> sudo apt-mark hold radiant-cms

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

dnf --showduplicates list radiant-cms sudo dnf downgrade radiant-cms-<VERSION_BEFORE_1.1.4> sudo dnf versionlock add radiant-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-2018-5216?

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

Is CVE-2018-5216 being exploited?

CVE-2018-5216 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-2018-5216 affect?

CVE-2018-5216 affects radiant cms. Severity is medium (CVSS 5.4). Radiant CMS 1.1.4 has XSS via crafted Markdown input in the part_body_content parameter to an admin/pages/*/edit resource.

How urgent is CVE-2018-5216?

Priority 35/100. Public exploit reference

Related CVEs

CVE-2018-7261 MEDIUM 5.4 DOWNGRADE There are multiple Persistent XSS vulnerabilities in Radiant CMS 1.1.4

References

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