Vulnerability · Published Jan 15, 2021 · Assigned by mitre

CVE-2021-23838

Medium 4.8

In plain English

A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS NVD)4.8Medium

Exploit odds (30 days)1.0%top 37.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/flatCore/flatCore-CMS x_refsource_MISC
https://sec-consult.com/vulnerability-lab/ x_refsource_MISC
http://packetstormsecurity.com/files/160936/flatCore-CMS-XSS-File-Disclosure-SQL-Injection.html x_refsource_MISC