How severe is CVE-2020-27377?

CVE-2020-27377 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-27377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27377?

CVE-2020-27377 affects Cmsmadesimple Cms Made Simple. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27377?

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

When was CVE-2020-27377 published?

CVE-2020-27377 was published on 2021-06-01 and last updated on 2026-06-17.

CVE-2020-27377

CVE-2020-27377 is a medium-severity vulnerability in Cmsmadesimple Cms Made Simple with a CVSS 3.x base score of 4.8. 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 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Cmsmadesimple Cms Made Simple
Published: 2021-06-01
Last modified: 2026-06-17

Description

A cross-site scripting (XSS) vulnerability was discovered in the Administrator panel on the 'Setting News' module on CMS Made Simple 2.2.14 which allows an attacker to execute arbitrary web scripts.

Frequently asked questions

What is CVE-2020-27377?: A cross-site scripting (XSS) vulnerability was discovered in the Administrator panel on the 'Setting News' module on CMS Made Simple 2.2.14 which allows an attacker to execute arbitrary web scripts.
How severe is CVE-2020-27377?: CVE-2020-27377 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-27377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27377?: CVE-2020-27377 affects Cmsmadesimple Cms Made Simple. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-27377 published?: CVE-2020-27377 was published on 2021-06-01 and last updated on 2026-06-17.

References

http://dev.cmsmadesimple.org/bug/view/12317

Affected products (1)

cpe:2.3:a:cmsmadesimple:cms_made_simple:2.2.14:*:*:*:*:*:*:*

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