CVE-2018-16730: \upload\plugins\sys\Install.php in CScms 4.1 has XSS via the site name.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2018-16730 is a medium-severity flaw (CVSS 6.1) affecting cscms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

\upload\plugins\sys\Install.php in CScms 4.1 has XSS via the site name.

Why this priority

No elevated risk signals yet

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	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-09-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: chshcms

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

Am I affected?

Timeline

2018-09-08 15:29 UTCPublished CVE record published
2026-06-17 01:44 UTCUpdated Record last modified

chshcms cscms DOWNGRADE

Affected: 4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1 (Debian / Ubuntu)

apt-cache madison cscms sudo apt install cscms=<VERSION_BEFORE_4.1> sudo apt-mark hold cscms

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

dnf --showduplicates list cscms sudo dnf downgrade cscms-<VERSION_BEFORE_4.1> sudo dnf versionlock add cscms

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-2018-16730?

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

Is CVE-2018-16730 being exploited?

CVE-2018-16730 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-2018-16730 affect?

CVE-2018-16730 affects cscms. Severity is medium (CVSS 6.1). \upload\plugins\sys\Install.php in CScms 4.1 has XSS via the site name.

How urgent is CVE-2018-16730?

Priority 35/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-30898 MEDIUM 6.5 DOWNGRADE A Cross-site request forgery (CSRF) vulnerability in Cscms music portal system v4.2 allows remote attackers to
CVE-2022-28552 HIGH 8.8 DOWNGRADE Cscms 4.1 is vulnerable to SQL Injection
CVE-2022-27369 HIGH 7.2 DOWNGRADE Cscms Music Portal System v4.2 was discovered to contain a SQL injection vulnerability via the component news_
CVE-2022-27368 HIGH 7.2 DOWNGRADE Cscms Music Portal System v4.2 was discovered to contain a SQL injection vulnerability via the component dance
CVE-2022-27367 HIGH 7.2 DOWNGRADE Cscms Music Portal System v4.2 was discovered to contain a SQL injection vulnerability via the component dance

References

← Back to latest CVEs