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CVE-2026-90817 is an unauthenticated remote code execution vulnerability affecting REDCap 13.3.0 and later. The flaw arises from the interaction of survey passthrough routing and Data Import processing: an attacker can manipulate HTTP requests from a public survey context to reach an unintended controller route, then provide a crafted file-path or stream parameter during import handling. This enables attacker-controlled code to be executed on the REDCap server. The weakness is primarily classified as CWE-94 (Code Injection), with external control of a file name or path (CWE-73) also implicated.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This six-file standalone Python proof of concept targets the claimed CVE-2026-90817 REDCap unauthenticated RCE chain. The main entry point, poc_cve_2026_90817.py, uses requests to first obtain or discover a public survey hash, then attempts survey-passthrough route manipulation followed by a crafted Data Import file-path/stream request. It supports single-target and allowlist-based batch operation, timeout configuration, result logging, and optional id or file-upload modes. It includes explicit authorization guards, but the allowlist is operator-controlled. The exploit is incomplete out of the box: its crucial controller route and vulnerable parameter are TODO placeholders, so normal execution halts until an operator supplies values derived from reverse engineering. The script nevertheless contains an operational hardcoded PHP system() web-shell payload and a webroot target path, showing the intended end state is server-side command execution. README.md documents setup and use; payload.txt is a benign upload test file; targets.txt is an empty commented allowlist template; requirements.txt contains requests>=2.31.0.
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16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated remote code execution vulnerability in REDCap survey passthrough routing and Data Import processing. An attacker with knowledge of a valid public survey hash could manipulate HTTP requests to reach an unintended controller route and supply a crafted file-path/stream parameter, potentially executing arbitrary code on the REDCap server.
An unauthenticated remote code execution vulnerability in REDCap survey passthrough routing and Data Import processing. An attacker with knowledge of a valid public survey hash can manipulate HTTP requests to reach an unintended controller route and supply a crafted file-path/stream parameter, potentially executing arbitrary code on the REDCap server.
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