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CVE-2026-84147 – Unauthenticated Arbitrary File Upload leading to RCE – Manacle Technologies Multi-t

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Summary

CVE-2026-84147 is a critical unrestricted file upload vulnerability affecting the Manacle Technologies Multi-tenant ERP System. An API endpoint fails to properly authenticate requests and validate uploaded file types, allowing an unauthenticated attacker to upload arbitrary files — including malicious code — to a web-accessible directory. This can lead to full remote code execution and complete compromise of the affected system, and the flaw has been assigned the maximum possible severity score.

Technical details

  • Root cause: The affected API endpoint lacks proper authentication controls and does not adequately validate the type/content of uploaded files (CWE-434: Unrestricted Upload of File with Dangerous Type).
  • Trigger conditions: No authentication or user interaction is required — an attacker only needs network access to the exposed API endpoint.
  • Attack vector: Network-based; the attacker sends a crafted upload request to the vulnerable endpoint, placing a malicious file (e.g., a web shell) into a directory served by the web application.
  • Impact: Successful exploitation allows arbitrary code execution on the underlying server, giving the attacker full control of the ERP system, including its data and connected tenant environments. Confidentiality, integrity, and availability are all impacted at the highest level.
  • This CVE was disclosed alongside two related issues in the same product: CVE-2026-84148 (an Insecure Direct Object Reference allowing access to other users’ data via parameter manipulation) and CVE-2026-84149 (a publicly exposed .git directory allowing source code and metadata reconstruction). These indicate broader access-control and exposure weaknesses in the same application stack.

Affected software

  • Manacle Technologies Multi-tenant ERP System — affected version(s) not specified by the vendor or in the public advisory. Organizations running any deployment of this ERP platform should treat it as potentially affected until vendor confirmation is received.

Severity

  • CVSS v4.0 Base Score: 10.0 (Critical)
  • Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  • Network attack vector, low attack complexity, no privileges or user interaction required, with high impact to confidentiality, integrity, and availability at both the vulnerable system and subsequent system level.

Mitigation and recommended actions

  • Immediate: No patched version has been published by the vendor at this time. Organizations should contact Manacle Technologies directly to obtain guidance or a fix for this issue.
  • Workarounds/network mitigations (until a patch is available):
    • Restrict network access to the ERP system’s API endpoints to trusted internal networks or VPNs only; do not expose file-upload API endpoints directly to the internet.
    • Deploy a web application firewall (WAF) to inspect and block anomalous file upload requests, particularly uploads with executable extensions or disguised MIME types.
    • Audit web-accessible upload directories for unexpected or executable files, and remove any suspicious files found.
    • Given the related exposure issues disclosed with this CVE, also verify that .git directories and other sensitive metadata are not publicly accessible, and review access controls on API endpoints that reference user or tenant identifiers to prevent unauthorized data access.
    • Monitor logs for unusual upload activity or unauthenticated requests to upload-related API paths.

References

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