CVE-2018-7476: controllers/admin/Linkage.php in dayrui FineCms 5.3.0 has Cross Site Scripting (XSS) via the id or lid paramet

Routine

MEDIUM 6.1DOWNGRADE

CVE-2018-7476 is a medium-severity flaw (CVSS 6.1) affecting finecms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

controllers/admin/Linkage.php in dayrui FineCms 5.3.0 has Cross Site Scripting (XSS) via the id or lid parameter in a c=linkage,m=import request to admin.php, because the xss_clean protection mechanism is defeated by crafted input that lacks a '<' or '>' character.

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	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-02-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: finecms

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

Am I affected?

Timeline

2018-02-25 19:29 UTCPublished CVE record published
2026-06-17 02:03 UTCUpdated Record last modified

finecms finecms DOWNGRADE

Affected: 5.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.3.0 (Debian / Ubuntu)

apt-cache madison finecms sudo apt install finecms=<VERSION_BEFORE_5.3.0> sudo apt-mark hold finecms

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

dnf --showduplicates list finecms sudo dnf downgrade finecms-<VERSION_BEFORE_5.3.0> sudo dnf versionlock add finecms

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-2018-7476?

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

Is CVE-2018-7476 being exploited?

CVE-2018-7476 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-2018-7476 affect?

CVE-2018-7476 affects finecms. Severity is medium (CVSS 6.1). controllers/admin/Linkage.php in dayrui FineCms 5.3.0 has Cross Site Scripting (XSS) via the id or lid parameter in a c=linkage,m=import request to admin.php, because the xss_clean protection mechanism is defeated by crafted input that lack

How urgent is CVE-2018-7476?

Priority 36/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-6893 CRITICAL 9.8 DOWNGRADE controllers/member/Api.php in dayrui FineCms 5.2.0 has SQL Injection: a request with s=member,c=api,m=checktit
CVE-2018-18191 HIGH 8.8 DOWNGRADE Cross-site request forgery (CSRF) vulnerability in /admin.php?c=member&m=edit&uid=1 in dayrui FineCms 5.4 allo
CVE-2017-9252 MEDIUM 6.1 MITIGATE andrzuk/FineCMS through 2017-05-28 is vulnerable to a reflected XSS in the search page via the text-search par
CVE-2017-9251 MEDIUM 6.1 MITIGATE andrzuk/FineCMS through 2017-05-28 is vulnerable to a reflected XSS in the sitename parameter to admin.php.
CVE-2017-6511 MEDIUM 6.1 UPGRADE andrzuk/FineCMS before 2017-03-06 is vulnerable to a reflected XSS in index.php because of missing validation

References

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