CVE-2018-16703: A vulnerability in the Gleez CMS 1.2.0 login page could allow an unauthenticated, remote attacker to perform m

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MEDIUM 5.3REMOTEDOWNGRADE

CVE-2018-16703 is a medium-severity flaw (CVSS 5.3) affecting gleez cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in the Gleez CMS 1.2.0 login page could allow an unauthenticated, remote attacker to perform multiple user enumerations, which can further help an attacker to perform login attempts in excess of the configured login attempt limit. The vulnerability is due to insufficient server-side access control and login attempt limit enforcement. An attacker could exploit this vulnerability by sending modified login attempts to the Portal logi

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Weakness	CWE-307, CWE-521, CWE-732
Published	2018-09-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gleeztech

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

Am I affected?

Timeline

2018-09-07 17:29 UTCPublished CVE record published
2026-06-17 01:44 UTCUpdated Record last modified

gleeztech gleez cms DOWNGRADE

Affected: 1.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.0

1. Check installed version

apt-cache policy gleez-cms || rpm -q gleez-cms || gleez-cms --version

2. No fixed release: DOWNGRADE to a release before 1.2.0 (Debian / Ubuntu)

apt-cache madison gleez-cms sudo apt install gleez-cms=<VERSION_BEFORE_1.2.0> sudo apt-mark hold gleez-cms

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

dnf --showduplicates list gleez-cms sudo dnf downgrade gleez-cms-<VERSION_BEFORE_1.2.0> sudo dnf versionlock add gleez-cms

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-2018-16703?

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

Is CVE-2018-16703 being exploited?

CVE-2018-16703 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-2018-16703 affect?

CVE-2018-16703 affects gleez cms. Severity is medium (CVSS 5.3). A vulnerability in the Gleez CMS 1.2.0 login page could allow an unauthenticated, remote attacker to perform multiple user enumerations, which can further help an attacker to perform login attempts in excess of the configured login attempt

How urgent is CVE-2018-16703?

Priority 42/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-27312 CRITICAL 9.4 DOWNGRADE Server Side Request Forgery (SSRF) vulnerability in Gleez Cms 1.2.0, allows remote attackers to execute arbitr
CVE-2018-7035 MEDIUM 5.4 DOWNGRADE Cross-site scripting (XSS) vulnerability in Gleez CMS 1.2.0 and 2.0 might allow remote attackers (users) to in
CVE-2018-16347 MEDIUM 6.1 DOWNGRADE An issue was discovered in Gleez CMS v1.2.0
CVE-2018-15845 HIGH 8.8 DOWNGRADE There is a CSRF vulnerability that can add an administrator account in Gleez CMS 1.2.0 via admin/users/add.
CVE-2018-13340 HIGH 8.8 DOWNGRADE Gleez CMS 1.2.0 has CSRF, as demonstrated by a /page/add request.

References

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