Cross Site Request Forgery vulnerability in GreenCMS v.2.3 allows an attacker to gain…
Priority LOW 37CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-352.
Summary
Cross Site Request Forgery vulnerability in GreenCMS v.2.3 allows an attacker to gain privileges via the adduser function of index.php.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00325 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-21366
- 2026-10-03 Alias added: GHSA-jhmp-h4x3-p89g
References
More Njtech Greencms vulnerabilities
- TI-2019-15627 Green CMS 2.x Path Traversal Arbitrary File Download CVSS 4.0HIGH 7.1
- TI-2019-15626 Green CMS 2.x SQL Injection via cat Parameter CVSS 4.0HIGH 7.1
- TI-2024-15071 A stored cross-site scripting (XSS) vulnerability in… CVSS 3.1MEDIUM 5.4
- TI-2025-08627 GreenCMS index.php unrestricted upload CVSS 4.0MEDIUM 5.3
- TI-2025-13864 GreenCMS File DataController.class.php path traversal CVSS 4.0MEDIUM 5.1
- TI-2025-13018 GreenCMS Menu Management CustomController.class.php cross site scripting CVSS 4.0MEDIUM 4.8
Sources
- CVE-2020-21366 · CVE Program
- CVE-2020-21366 · NVD
- FIRST EPSS
- GHSA-jhmp-h4x3-p89g · GitHub Advisory Database · CC BY 4.0
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