CVE-2020-18418: A Cross site request forgery (CSRF) vulnerability was discovered in FeiFeiCMS v4.1.190209, which allows attack

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HIGH 8.8DOWNGRADE

CVE-2020-18418 is a high-severity flaw (CVSS 8.8) affecting feifeicms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross site request forgery (CSRF) vulnerability was discovered in FeiFeiCMS v4.1.190209, which allows attackers to create administrator accounts via /index.php?s=Admin-Admin-Insert.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-352
Published	2023-06-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: feifeicms

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

Am I affected?

Timeline

2023-06-27 19:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

feifeicms feifeicms DOWNGRADE

Affected: 4.1.190209

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.190209

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1.190209 (Debian / Ubuntu)

apt-cache madison feifeicms sudo apt install feifeicms=<VERSION_BEFORE_4.1.190209> sudo apt-mark hold feifeicms

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

dnf --showduplicates list feifeicms sudo dnf downgrade feifeicms-<VERSION_BEFORE_4.1.190209> sudo dnf versionlock add feifeicms

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-2020-18418?

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

Is CVE-2020-18418 being exploited?

CVE-2020-18418 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-2020-18418 affect?

CVE-2020-18418 affects feifeicms. Severity is high (CVSS 8.8). A Cross site request forgery (CSRF) vulnerability was discovered in FeiFeiCMS v4.1.190209, which allows attackers to create administrator accounts via /index.php?s=Admin-Admin-Insert.

How urgent is CVE-2020-18418?

Priority 44/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2023-1565 LOW 3.5 DOWNGRADE A vulnerability was found in FeiFeiCMS 2.7.130201

References

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