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Public proof of concept

CVE-2023-5221

A public proof of concept exists; no exploitation attested.

  • Published2023-09-27
  • WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability classified as critical has been found in ForU CMS. This affects an unknown part of the file /install/index.php. The manipulation of the argument db_name leads to code injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The associated identifier of this vulnerability is VDB-240363. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Timeline

dates in UTC
  1. 2023-09-2715:19CVE publishedNVD

Versions per branch

NVD · CISA-ADP
Foru cms project foru cms
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • ForU CMS

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-10-24

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2024-09-24
  • CNACVSS 3.14.7known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNACVSS 2.05.8known since 2026-10-23
  • CNAweakness (CWE)CWE-94known since 2026-10-23
  • FIRST EPSSEPSS score1.5 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-09-27
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-qvr3-gchp-26j6

Frequently asked questions

What is CVE-2023-5221?

A vulnerability classified as critical has been found in ForU CMS. This affects an unknown part of the file /install/index.php. The manipulation of the argument db_name leads to code injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The associated identifier of this vulnerability is VDB-240363. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Is CVE-2023-5221 actively exploited?

A proof-of-concept exploit exists for CVE-2023-5221, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-5221?

CVE-2023-5221 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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