CVE-2020-21366
CVE-2020-21366 is a high-severity vulnerability in Njtech Greencms with a CVSS 3.x base score of 8.0. 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-352.
Key facts
- Severity: High (CVSS 3.x base score 8.0)
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-352
- Affected product: Njtech Greencms
- Published:
- Last modified:
Description
Cross Site Request Forgery vulnerability in GreenCMS v.2.3 allows an attacker to gain privileges via the adduser function of index.php.
Frequently asked questions
- What is CVE-2020-21366?
- Cross Site Request Forgery vulnerability in GreenCMS v.2.3 allows an attacker to gain privileges via the adduser function of index.php.
- How severe is CVE-2020-21366?
- CVE-2020-21366 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-21366 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-21366?
- CVE-2020-21366 affects Njtech Greencms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-21366?
- 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-2020-21366 published?
- CVE-2020-21366 was published on 2023-06-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:njtech:greencms:2.3:*:*:*:*:*:*:*
More vulnerabilities in Njtech Greencms
- CVE-2018-11671 — High (CVSS 8.8): An issue was discovered in GreenCMS v2.3.0603. There is a CSRF vulnerability that can add an admin account via…
- CVE-2018-11670 — High (CVSS 8.8): An issue was discovered in GreenCMS v2.3.0603. There is a CSRF vulnerability that allows attackers to execute arbitrary…
- CVE-2022-28918 — High (CVSS 8.1): GreenCMS v2.3.0603 was discovered to contain an arbitrary file deletion vulnerability via…
- CVE-2018-12604 — High (CVSS 7.5): GreenCMS 2.3.0603 allows remote attackers to obtain sensitive information via a direct request for…
- CVE-2019-25573 — High (CVSS 7.1): Green CMS 2.x contains an SQL injection vulnerability that allows authenticated attackers to execute arbitrary SQL…
- CVE-2019-25574 — Medium (CVSS 6.5): Green CMS 2.x contains a path traversal vulnerability that allows authenticated attackers to download arbitrary files…
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