How severe is CVE-2020-21976?

CVE-2020-21976 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-21976 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-21976?

CVE-2020-21976 affects Newsone Cms Project Newsone Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-21976?

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

When was CVE-2020-21976 published?

CVE-2020-21976 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2020-21976

CVE-2020-21976 is a high-severity vulnerability in Newsone Cms Project Newsone Cms with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Newsone Cms Project Newsone Cms
Published: 2021-08-11
Last modified: 2026-06-17

Description

An arbitrary file upload in the <input type="file" name="user_image"> component of NewsOne CMS v1.1.0 allows attackers to webshell and execute arbitrary commands.

Frequently asked questions

What is CVE-2020-21976?: An arbitrary file upload in the <input type="file" name="user_image"> component of NewsOne CMS v1.1.0 allows attackers to webshell and execute arbitrary commands.
How severe is CVE-2020-21976?: CVE-2020-21976 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-21976 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-21976?: CVE-2020-21976 affects Newsone Cms Project Newsone Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-21976?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-21976 published?: CVE-2020-21976 was published on 2021-08-11 and last updated on 2026-06-17.

References

https://cxsecurity.com/issue/WLB-2020010143

Affected products (1)

cpe:2.3:a:newsone_cms_project:newsone_cms:1.1.0:*:*:*:*:*:*:*

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