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CVE-2021-41402: flatCore-CMS v2.0.8 has a code execution vulnerability, which could let a remote malicious user execute arb...

flatCore-CMS v2.0.8 has a code execution vulnerability, which could let a remote malicious user execute arbitrary PHP code.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-41402 describes a reported remote code execution flaw in flatCore-CMS v2.0.8. If an affected site is exposed, a malicious remote user could execute arbitrary PHP code. Public scoring, affected CPEs, and confirmed fixed versions are not provided in the source bundle.

Executive priority

Treat this as urgent if flatCore-CMS v2.0.8 is public-facing, because remote PHP execution can lead to site takeover. If the product is not present, priority is low after documented inventory confirmation.

Technical view

The CVE record states flatCore-CMS v2.0.8 has a code execution vulnerability enabling arbitrary PHP code execution by a remote malicious user. The bundle provides no CVSS vector, CWE classification, exploit prerequisites, affected CPEs, or remediation version, so technical validation should avoid assumptions beyond version and exposure checks.

Likely exposure

Exposure is likely limited to organizations running flatCore-CMS v2.0.8, especially internet-facing deployments. The official affected-product metadata is incomplete, so inventory should rely on application name and version evidence rather than CPE matching.

Exploitation context

The source bundle does not show CISA KEV listing or other evidence of active exploitation. The GitHub issue reference suggests public disclosure exists, but the provided bundle does not include enough detail to confirm exploit availability or attack complexity.

Researcher notes

Evidence is sparse: no CVSS, CWE, CPE, fixed version, or KEV status is supplied. Analysis should stay anchored to the CVE description and GitHub issue reference, and any deeper exploitability conclusions require direct vendor or issue review.

Mitigation direction

  • Identify any flatCore-CMS v2.0.8 deployments.
  • Check flatCore project guidance and issue 59 for confirmed fixes.
  • Restrict public access to affected admin or upload surfaces where feasible.
  • Back up content and configuration before remediation changes.
  • If no fixed release is confirmed, consider retiring or isolating affected instances.

Validation and detection

  • Confirm product and version from application files or admin metadata.
  • Determine whether the CMS is internet-facing or behind access controls.
  • Review web roots for unexpected PHP files or recent content changes.
  • Review web server logs for suspicious CMS requests.
  • Monitor vendor and CVE records for updated remediation details.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-41402 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.