How severe is CVE-2018-20756?

CVE-2018-20756 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-20756 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20756?

CVE-2018-20756 primarily affects Modx Modx Revolution. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-20756?

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

When was CVE-2018-20756 published?

CVE-2018-20756 was published on 2019-02-06 and last updated on 2026-06-17.

CVE-2018-20756

CVE-2018-20756 is a medium-severity vulnerability in Modx Modx Revolution with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Modx Modx Revolution
Published: 2019-02-06
Last modified: 2026-06-17

Description

MODX Revolution through v2.7.0-pl allows XSS via a document resource (such as pagetitle), which is mishandled during an Update action, a Quick Edit action, or the viewing of manager logs.

Frequently asked questions

What is CVE-2018-20756?: MODX Revolution through v2.7.0-pl allows XSS via a document resource (such as pagetitle), which is mishandled during an Update action, a Quick Edit action, or the viewing of manager logs.
How severe is CVE-2018-20756?: CVE-2018-20756 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-20756 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20756?: CVE-2018-20756 primarily affects Modx Modx Revolution. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-20756?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-20756 published?: CVE-2018-20756 was published on 2019-02-06 and last updated on 2026-06-17.

References

https://github.com/modxcms/revolution/issues/14105

Affected products (2)

cpe:2.3:a:modx:modx_revolution:*:*:*:*:*:*:*:*
cpe:2.3:a:modx:modx_revolution:2.7.0:pl:*:*:*:*:*:*

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