CVE-2020-23839 EXPLOIT
6.1
MEDIUM · CVSS 3.1 · EPSS 10.5% (pctl 96)
Patch early
A public exploit exists.
Description
A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to execute JavaScript code in the client's browser and harvest login credentials after a client clicks a link, enters credentials, and submits the login form.
Scoring
| CVSS | 6.1 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| EPSS | 10.46% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-79 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2020-09-01 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| get-simple | getsimple cms |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | GetSimple CMS 3.3.16 - Persistent Cross-Site Scripting | 2021-03-30 |
References
- http://packetstormsecurity.com/files/162016/GetSimple-CMS-3.3.16-Cross-Site-Scripting-Shell-Upload.html
- https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1330
- https://github.com/boku7/CVE-2020-23839
- https://www.exploit-db.com/exploits/49726
- http://packetstormsecurity.com/files/162016/GetSimple-CMS-3.3.16-Cross-Site-Scripting-Shell-Upload.html
- https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1330
- https://github.com/boku7/CVE-2020-23839
- https://www.exploit-db.com/exploits/49726
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