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CVE-2026-80236 – SQL Injection Enabling Unauthenticated Database Access – EFence ≤ 1.2.66 DB Ver:56

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Summary

CVE-2026-80236 is a SQL Injection vulnerability (CWE-89) in EFence, a product developed by Thinking Software Technology. The flaw allows unauthenticated remote attackers to reach the application’s file upload functionality and inject malicious SQL to read arbitrary database contents. The issue is rated High severity with a CVSS v3.1 base score of 8.2.

Technical details

  • Root cause: EFence fails to properly neutralize special elements used in SQL commands (improper input sanitization / SQL injection, CWE-89) within functionality tied to its file upload feature.
  • Trigger conditions: No authentication or user interaction is required; the vulnerable functionality is reachable over the network.
  • Attack vector: Network-based (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N).
  • Impact: High confidentiality impact — attackers can extract sensitive data from the backend database — with a low integrity impact and no direct availability impact per the CVSS vector.
  • This vulnerability was disclosed alongside two related arbitrary file upload flaws in the same product (CVE-2026-80235, a critical unauthenticated web shell upload issue, and CVE-2026-80237, an authenticated web shell upload issue), indicating that EFence’s upload handling logic has broader security weaknesses beyond this specific SQL injection.

Affected software

  • EFence (Thinking Software Technology) version 1.2.66 DB Ver:56 and earlier

Severity

  • CVSS v3.1 Base Score: 8.2 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Mitigation and recommended actions

  • Immediate: Upgrade EFence to version 1.2.67 DB Ver:57 or later, which resolves this vulnerability.
  • If immediate patching is not possible:
    • Restrict network access to EFence’s web interface and file upload endpoints to trusted internal networks or VPN only, removing direct internet exposure.
    • Deploy a web application firewall (WAF) with SQL injection detection rules in front of the application as a temporary compensating control.
    • Monitor database and application logs for anomalous queries or unexpected access to upload-related endpoints.
    • Given the co-disclosed critical file upload vulnerabilities (CVE-2026-80235, CVE-2026-80237) affecting the same versions, prioritize the full upgrade to 1.2.67 DB Ver:57 rather than relying on point mitigations.

References

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