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CVE-2026-76158 – Arbitrary File Write via Path Traversal – Datiphy Data Management Center v8.3.0–v8.

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Summary

CVE-2026-76158 is a critical path traversal vulnerability (CWE-73: External Control of File Name or Path) affecting the upload API endpoint of Datiphy Data Management Center. The flaw allows unauthenticated, remote attackers to write files to arbitrary locations outside the intended upload directory, potentially leading to full compromise of confidentiality-adjacent controls, integrity, and availability of the affected system. The vulnerability carries a CVSS score of 9.3 (Critical) with a network attack vector requiring no privileges or user interaction.

Technical details

  • Root cause: The upload API endpoint in Datiphy Data Management Center fails to properly sanitize or validate file name/path input supplied by the client, permitting relative (../) or absolute path sequences to escape the intended upload directory.
  • Trigger conditions: An attacker sends a crafted request to the upload API endpoint containing path traversal sequences in the file name or path parameter.
  • Attack vector: Network-based, requiring no authentication (PR:N) and no user interaction (UI:N), with low attack complexity (AC:L), making the vulnerability trivially exploitable by any remote actor with network access to the exposed service.
  • Impact: Successful exploitation enables arbitrary file writes outside the sandboxed upload directory. Depending on the target file path, this can be leveraged to overwrite critical system or application files, plant malicious files (e.g., web shells or scheduled tasks), and disrupt or fully compromise the integrity and availability of the host system.

Affected software

  • Datiphy Data Management Center: v8.3.0 through v8.5.1
  • Versions outside this range are reported as unaffected.

Severity

  • CVSS v4.0 Base Score: 9.3 (Critical)
  • Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
  • Key drivers: Network attack vector, low attack complexity, no privileges or user interaction required, and high integrity/availability impact.

Mitigation and recommended actions

  • Immediate: Upgrade Datiphy Data Management Center to a version outside the affected v8.3.0–v8.5.1 range. Consult Datiphy directly for the specific patched release, as no official vendor advisory with a fixed version number was identified at the time of publication.
  • If no patch is available or cannot be applied immediately:
    • Restrict network access to the Data Management Center upload API endpoint to trusted management networks only (e.g., via firewall rules or VPN-only access), removing any direct internet exposure.
    • Deploy a web application firewall (WAF) rule to detect and block path traversal sequences (e.g., ../, .., encoded variants) in requests to upload endpoints.
    • Monitor file system integrity and application logs for unexpected file writes outside designated upload directories.
    • Run the Data Management Center service with least-privilege file system permissions to limit the blast radius of any successful arbitrary write.

References

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