CVE-2021-47860
GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE
- State
- Published
- Severity
- 8.5 High
- Published
- Jan 21, 2026
- Updated
- Apr 7, 2026
- Reserved
- Jan 18, 2026
Description
GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-352 Cross-Site Request Forgery (CSRF)
Affected Products
| Product | Versions |
|---|---|
Custom JS PluginGetSimple CMS |
|
References
- ExploitDB-49816exploit
- Vendor Homepageproduct
- GetSimple CMS GitHub Repositoryproduct
- Researcher Disclosuretechnical-descriptionexploit
- ExploitDB-49712exploit
- VulnCheck Advisory: GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCEthird-party-advisory
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