How severe is CVE-2018-1999021?

CVE-2018-1999021 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-1999021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1999021?

CVE-2018-1999021 affects Gleeztech Gleezcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1999021?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1999021 published?

CVE-2018-1999021 was published on 2018-07-23 and last updated on 2026-06-17.

CVE-2018-1999021

CVE-2018-1999021 is a medium-severity vulnerability in Gleeztech Gleezcms with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Gleeztech Gleezcms
Published: 2018-07-23
Last modified: 2026-06-17

Description

Gleezcms Gleez Cms version 1.3.0 contains a Cross Site Scripting (XSS) vulnerability in Profile page that can result in Inject arbitrary web script or HTML via the profile page editor. This attack appear to be exploitable via The victim must navigate to the attacker's profile page.

Frequently asked questions

What is CVE-2018-1999021?: Gleezcms Gleez Cms version 1.3.0 contains a Cross Site Scripting (XSS) vulnerability in Profile page that can result in Inject arbitrary web script or HTML via the profile page editor. This attack appear to be exploitable via The victim must navigate to the attacker's profile page.
How severe is CVE-2018-1999021?: CVE-2018-1999021 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-1999021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1999021?: CVE-2018-1999021 affects Gleeztech Gleezcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1999021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1999021 published?: CVE-2018-1999021 was published on 2018-07-23 and last updated on 2026-06-17.

References

https://github.com/gleez/cms/issues/797

Affected products (1)

cpe:2.3:a:gleeztech:gleezcms:1.3.0:*:*:*:*:*:*:*

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