How severe is CVE-2020-28063?

CVE-2020-28063 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-28063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28063?

CVE-2020-28063 affects Articlecms Project Articlecms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28063?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-28063 published?

CVE-2020-28063 was published on 2021-05-13 and last updated on 2026-06-17.

CVE-2020-28063

CVE-2020-28063 is a critical-severity vulnerability in Articlecms Project Articlecms with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Articlecms Project Articlecms
Published: 2021-05-13
Last modified: 2026-06-17

Description

A file upload issue exists in all versions of ArticleCMS which allows malicious users to getshell.

Frequently asked questions

What is CVE-2020-28063?: A file upload issue exists in all versions of ArticleCMS which allows malicious users to getshell.
How severe is CVE-2020-28063?: CVE-2020-28063 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-28063 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28063?: CVE-2020-28063 affects Articlecms Project Articlecms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28063?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-28063 published?: CVE-2020-28063 was published on 2021-05-13 and last updated on 2026-06-17.

References

https://github.com/woider/ArticleCMS/issues/8

Affected products (1)

cpe:2.3:a:articlecms_project:articlecms:-:*:*:*:*:*:*:*

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