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.
Published 2021-01-15 07:15:14
Updated 2021-01-22 17:34:09
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Cross site scripting (XSS)Bypass

Exploit prediction scoring system (EPSS) score for CVE-2021-23838

0.25%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 65 %
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

References for CVE-2021-23838

Products affected by CVE-2021-23838

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