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TI-2021-02678 Aliases CVE-2021-3745GHSA-8mvp-5wcj-59wf

Unrestricted Upload of File with Dangerous Type in flatcore/flatcore-cms

Priority LOW 31CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.

Summary

flatcore-cms is vulnerable to Unrestricted Upload of File with Dangerous Type

Why it matters now

EPSS 0.0111 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged 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
flatcoreflatcore/flatcore-cmsup to 2.1.0—No fix listedCNA
  • flatcore/flatcore-cms Vendorflatcore Affected up to 2.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:flatcore:flatcore-cms:*:*:*:*:*:*:*:*before 2.1.0Vulnerableflatcore
  • cpe:2.3:a:flatcore:flatcore-cms:*:*:*:*:*:*:*:* Versions before 2.1.0 Vulnerable ·flatcore

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3745
  2. 2026-10-03 Alias added: GHSA-8mvp-5wcj-59wf

References

Exploit 1

Patch 1

  • TI-2021-16852 Remote Code Execution (RCE) vulnerabilty exists in FlatCore-CMS 2.0.7 via the upload… CVSS 3.1HIGH 7.2
  • TI-2022-21040 A cross-site scripting (XSS) vulnerability in flatCore-CMS v2.1.0 allows attackers to… CVSS 3.1MEDIUM 6.1
  • TI-2021-18214 flatCore-CMS version 2.0.8 calls dangerous functions, causing server-side request forgery vulnerabilities. CVSS 3.1CRITICAL 9.8
  • TI-2017-05491 SQL Injection vulnerability in flatCore version 1.4.6 allows an attacker to read and write to the users database. CVSS 3.0CRITICAL 9.8
  • TI-2021-18213 flatCore-CMS v2.0.8 has a code execution vulnerability, which could let a remote… CVSS 3.1HIGH 8.8
  • TI-2017-05490 CSRF vulnerability in flatCore version 1.4.6 allows remote attackers to modify CMS configurations. CVSS 3.0HIGH 8.8
See all 12 →

Sources

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