{"vulnerability": "CVE-2026-51923", "sightings": [{"uuid": "55e880ed-ff88-4984-99a9-4669108f2566", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-51923", "type": "seen", "source": "https://gist.github.com/ZeroBreach-GmbH/f582fe0ded3bcccead7a7e90fca8c107", "content": "##### Description\n\nAn Insecure Direct Object Reference (IDOR) vulnerability exists in the application\u2019s user management functionality that allows an authenticated attacker to modify or retrieve sensitive data associated with other users\u2019 accounts.\n\n##### Details\n\n*   **Product:** docuForm FSM Server\n*   **Affected Versions:** 11.11c\n*   **Vulnerability Type:** CWE-639: Authorization Bypass Through User-Controlled Key\n*   **Risk Level:** High - CVSS 3.1: 8.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)\n*   **Vendor URL:** www.docuform.de\n*   **Vendor acknowledged vulnerability:** Yes\n*   **CVE:** CVE-2026-51923\n\n##### Impact\n\nAn authenticated attacker who exploits this IDOR\u2011based vulnerability can gain full control over other users\u2019 accounts, resulting in account takeover.\n\n##### References\n\n*   [National Vulnerability Database CVE-2026-51923](https://nvd.nist.gov/vuln/detail/CVE-2026-51923)\n*   [ZeroBreach GmbH - CVE-2026-51923](https://zerobreach.de/blog/security-advisories/CVE-2026-51923.html)\n\n##### Timeline\n\n*   **2025-10:** Vulnerability reported to the vendor.\n*   **2025-11:** Vendor published a fix for the issue.\n*   **2026-06:** Information about the vulnerability is published.\n\n##### Credits\n\n*   Bastian Recktenwald ([Bastian.Recktenwald@ZeroBreach.de](mailto:Bastian.Recktenwald@ZeroBreach.de))", "creation_timestamp": "2026-07-01T08:44:39.256275Z"}]}