CVE-2026-90817 Code injection in REDCap
Unauthenticated attackers can execute arbitrary code on REDCap servers by manipulating survey routing and import parameters, requiring only a valid public survey hash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90817?
CVE-2026-90817 is a critical code injection vulnerability in Vanderbilt University REDCap, published on 20 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated Remote Code Execution vulnerability was found in the survey passthrough routing and Data Import processing logic, in which a malicious user could potentially exploit it by manipulating HTTP requests to access an unintended controller route from a public survey context and by supplying a crafted file-path/stream parameter during import handling. If successfully exploited, this could allow the attacker to remotely execute arbitrary code on the REDCap server. The attacker does not have to be authenticated in order to exploit this, but exploitation requires knowledge of a valid public survey hash. This vulnerability exists in REDCap 13.3.0 and higher.
Which versions are affected by CVE-2026-90817?
How do I fix CVE-2026-90817?
No fix has been published for CVE-2026-90817 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-90817 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90817 exists.
Public exploit code: 1 Nuclei template and 6 proofs of concept on GitHub.
Sources
Also known as GHSA-hg88-qg2r-c8mx.