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CVE-2021-23838

Published: Jan 15, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-79
NVD MITRE
4.8CVSSMEDIUM
EPSS Score
1.0%
Top 42.4%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

n/an/a
flatcoreflatcore
Mixed
Web & CMS Plugins / cms-core
flatcoreoss-projectWeb & CMS Pluginsaka flatcore-cms, flatcore cms

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

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

Timeline

Published
Jan 15, 2021
Last Updated
Nov 21, 2024

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