Vulnerability Details : CVE-2021-23838
Potential exploit
An issue was discovered in flatCore before 2.0.0 build 139. A reflected XSS vulnerability was identified in the media_filter HTTP request body parameter for the acp interface. The affected parameter accepts malicious client-side script without proper input sanitization. For example, a malicious user can leverage this vulnerability to steal cookies from a victim user and perform a session-hijacking attack, which may then lead to unauthorized access to the site.
Vulnerability category: Cross site scripting (XSS)Bypass
Products affected by CVE-2021-23838
- cpe:2.3:a:flatcore:flatcore:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-23838
0.34%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-23838
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
4.8
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
1.7
|
2.7
|
NIST |
CWE ids for CVE-2021-23838
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-23838
-
https://github.com/flatCore/flatCore-CMS
GitHub - flatCore/flatCore-CMS: flatCore is a Web Content Management System (CMS) based on PHP and MySQL/SQLite.Product;Third Party Advisory
-
http://packetstormsecurity.com/files/160936/flatCore-CMS-XSS-File-Disclosure-SQL-Injection.html
flatCore CMS XSS / File Disclosure / SQL Injection ≈ Packet StormExploit;Third Party Advisory;VDB Entry
-
https://sec-consult.com/vulnerability-lab/
Vulnerability Lab - SEC ConsultThird Party Advisory
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