How severe is CVE-2018-6550?

CVE-2018-6550 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-2018-6550 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6550?

CVE-2018-6550 affects Monstra. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6550?

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

When was CVE-2018-6550 published?

CVE-2018-6550 was published on 2018-02-02 and last updated on 2026-06-17.

CVE-2018-6550

CVE-2018-6550 is a medium-severity vulnerability in Monstra 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% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Monstra
Published: 2018-02-02
Last modified: 2026-06-17

Description

Monstra CMS through 3.0.4 has XSS in the title function in plugins/box/pages/pages.plugin.php via a page title to admin/index.php.

Frequently asked questions

What is CVE-2018-6550?: Monstra CMS through 3.0.4 has XSS in the title function in plugins/box/pages/pages.plugin.php via a page title to admin/index.php.
How severe is CVE-2018-6550?: CVE-2018-6550 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-2018-6550 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6550?: CVE-2018-6550 affects Monstra. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6550?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6550 published?: CVE-2018-6550 was published on 2018-02-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:monstra:monstra:*:*:*:*:*:*:*:*

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