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Vulnerability record · CVE-2022-43118 · published 9 November 2022

CVE-2022-43118: Flatcore-cms cross-site scripting vulnerability

Flatcore · Flatcore Cms

A cross-site scripting (XSS) vulnerability in flatCore-CMS v2.1.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Username text field.

6.1 CVSS 3.1 Medium EPSS 0.43% · top 65.6% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A cross-site scripting (XSS) vulnerability in flatCore-CMS v2.1.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Username text field.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/flatCore/flatCore-CMS/issues/86 ExploitIssue TrackingThird Party Advisory
https://github.com/flatCore/flatCore-CMS/issues/86 ExploitIssue TrackingThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-41403Flatcore-cms server-side request forgery (ssrf) vulnerabilityflatCore-CMS version 2.0.8 calls dangerous functions, causing server-side request forgery vulnerabilities.EPSS 19%9.8CVE-2017-7878Flatcore-cms sql injection vulnerabilitySQL Injection vulnerability in flatCore version 1.4.6 allows an attacker to read and write to the users database.EPSS 1.0%8.8CVE-2021-41402Flatcore-cms code injection vulnerabilityflatCore-CMS v2.0.8 has a code execution vulnerability, which could let a remote malicious user execute arbitrary PHP code.EPSS 1.4%8.8CVE-2017-7877Flatcore-cms cross-site request forgery vulnerabilityCSRF vulnerability in flatCore version 1.4.6 allows remote attackers to modify CMS configurations.EPSS 0.91%7.5CVE-2017-8868Flatcore-cms path traversal vulnerabilityacp/core/files.browser.php in flatCore 1.4.7 allows file deletion via directory traversal in the delete parameter to acp/acp.php. The risk might be l…EPSS 1.9%7.5CVE-2017-7879Flatcore-cms sql injection vulnerabilitySQL Injection vulnerability in flatCore version 1.4.6 allows an attacker to read the content database.EPSS 1.0%7.2CVE-2021-39608FlatCore-CMS upload addon allows unrestricted PHP file upload and RCEFlatCore-CMS 2.0.7 contains an unrestricted file upload flaw (CWE-434) in the upload addon plugin, letting a remote user place arbitrary PHP code on …EPSS 46%analysed6.6CVE-2021-3745Flatcore-cms unrestricted file upload vulnerabilityflatcore-cms is vulnerable to Unrestricted Upload of File with Dangerous TypeEPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2022-43118), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.