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TI-2020-13216 Aliases CVE-2020-17451GHSA-m5g4-cg24-mc6m

flatCore before 1.5.7 allows XSS by an admin via the…

Priority LOW 23CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

flatCore before 1.5.7 allows XSS by an admin via the acp/acp.php?tn=pages&sub=edit&editpage=1 page_linkname, page_title, page_content, or page_extracontent parameter, or the acp/acp.php?tn=system&sub=sys_pref prefs_pagename, prefs_pagetitle, or prefs_pagesubtitle parameter.

Why it matters now

EPSS 0.00611 49th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:flatcore:flatcore:*:*:*:*:*:*:*:*before 1.5.7Vulnerableflatcore
  • cpe:2.3:a:flatcore:flatcore:*:*:*:*:*:*:*:* Versions before 1.5.7 Vulnerable ·flatcore

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-17451
  2. 2026-10-03 Alias added: GHSA-m5g4-cg24-mc6m

References

Exploit 2

  • TI-2021-17581 Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to… CVSS 3.1MEDIUM 5.4
  • TI-2019-10413 A CSRF vulnerability was found in flatCore before 1.5, leading to the upload of arbitrary… CVSS 3.0HIGH 8.8
  • TI-2019-07947 An issue was discovered in flatCore 1.4.7. CVSS 3.0HIGH 7.2
  • TI-2020-13217 flatCore before 1.5.7 allows upload and execution of a .php file by an admin. CVSS 3.1HIGH 7.2
  • TI-2021-06201 An issue was discovered in flatCore before 2.0.0 build 139. CVSS 3.1MEDIUM 6.5
  • TI-2017-06862 Cross site scripting (XSS) vulnerability in pages.edit_form.php in flatCore 1.4.6 allows… CVSS 3.0MEDIUM 6.1
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences