CVE-2021-23836

MEDIUM
4.8
CVSS Score
Published: January 15, 2021 at 06:26 AM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorFlatcore

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.9%

Description

An issue was discovered in flatCore before 2.0.0 build 139. A stored XSS vulnerability was identified in the prefs_smtp_psw HTTP request body parameter for the acp interface. An admin user can inject malicious client-side script into the affected parameter without any form of input sanitization. The injected payload will be executed in the browser of a user whenever one visits the affected module page.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_MISCProductThird Party Advisory
https://github.com/flatCore/flatCore-CMS
x_refsource_MISCThird Party Advisory
https://sec-consult.com/vulnerability-lab/

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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