CVE-2018-18209: XSS exists in DiliCMS 2.4.0 via the admin/index.php/setting/site?tab=site_attachment attachment_type parameter

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MEDIUM 6.1DOWNGRADE

CVE-2018-18209 is a medium-severity flaw (CVSS 6.1) affecting dilicms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XSS exists in DiliCMS 2.4.0 via the admin/index.php/setting/site?tab=site_attachment attachment_type parameter.

Why this priority

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	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-10-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dilicms

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

Am I affected?

Timeline

2018-10-10 16:29 UTCPublished CVE record published
2026-06-17 01:46 UTCUpdated Record last modified

dilicms dilicms DOWNGRADE

Affected: 2.4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.0

1. Check installed version

apt-cache policy dilicms || rpm -q dilicms || dilicms --version

2. No fixed release: DOWNGRADE to a release before 2.4.0 (Debian / Ubuntu)

apt-cache madison dilicms sudo apt install dilicms=<VERSION_BEFORE_2.4.0> sudo apt-mark hold dilicms

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

dnf --showduplicates list dilicms sudo dnf downgrade dilicms-<VERSION_BEFORE_2.4.0> sudo dnf versionlock add dilicms

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-2018-18209?

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

Is CVE-2018-18209 being exploited?

CVE-2018-18209 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-2018-18209 affect?

CVE-2018-18209 affects dilicms. Severity is medium (CVSS 6.1). XSS exists in DiliCMS 2.4.0 via the admin/index.php/setting/site?tab=site_attachment attachment_type parameter.

How urgent is CVE-2018-18209?

Priority 41/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2019-8440 MEDIUM 4.8 DOWNGRADE An issue was discovered in DiliCMS 2.4.0
CVE-2019-8439 MEDIUM 5.4 DOWNGRADE An issue was discovered in DiliCMS 2.4.0
CVE-2019-8438 MEDIUM 4.8 DOWNGRADE An issue was discovered in DiliCMS 2.4.0
CVE-2018-19291 MEDIUM 6.5 DOWNGRADE An issue was discovered in DiliCMS 2.4.0
CVE-2018-18210 MEDIUM 6.1 DOWNGRADE XSS exists in DiliCMS 2.4.0 via the admin/index.php/setting/site?tab=site_attachment attachment_url parameter.

References

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