CVE-2018-12603: Cross-site request forgery (CSRF) vulnerability in admin.php in LFCMS 3.7.0 allows remote attackers to hijack

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HIGH 8.8DOWNGRADE

CVE-2018-12603 is a high-severity flaw (CVSS 8.8) affecting lfcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site request forgery (CSRF) vulnerability in admin.php in LFCMS 3.7.0 allows remote attackers to hijack the authentication of unspecified users for requests that add administrator users via the s parameter, a related issue to CVE-2018-12114.

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	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-352
Published	2018-06-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lfdycms

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

Am I affected?

Timeline

2018-06-25 20:29 UTCPublished CVE record published
2026-06-17 01:38 UTCUpdated Record last modified

lfdycms lfcms DOWNGRADE

Affected: 3.7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.7.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.7.0 (Debian / Ubuntu)

apt-cache madison lfcms sudo apt install lfcms=<VERSION_BEFORE_3.7.0> sudo apt-mark hold lfcms

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

dnf --showduplicates list lfcms sudo dnf downgrade lfcms-<VERSION_BEFORE_3.7.0> sudo dnf versionlock add lfcms

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: LFCMS 3.7.0 - Cross-Site Request Forgery (Add Admin)

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-2018-12603?

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

Is CVE-2018-12603 being exploited?

CVE-2018-12603 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-2018-12603 affect?

CVE-2018-12603 affects lfcms. Severity is high (CVSS 8.8). Cross-site request forgery (CSRF) vulnerability in admin.php in LFCMS 3.7.0 allows remote attackers to hijack the authentication of unspecified users for requests that add administrator users via the s parameter, a related issue to CVE-2018

How urgent is CVE-2018-12603?

Priority 58/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-12602 HIGH 8.8 DOWNGRADE A CSRF vulnerability exists in LFCMS 3.7.0: users can be added arbitrarily.

References

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