CVE-2026-90817REDCap Code Injection
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…
Published Sep 20, 2026 · Updated Sep 22, 2026 · Also known as EUVD-2026-83738, GHSA-hg88-qg2r-c8mx
Key Facts
Patch immediately- CVE-2026-90817 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting REDCap.
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Oct 7, 2026. No public exploit code is known.
- EPSS estimates a 0.9% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
0.9%
Higher than 58.2% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
46/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Oct 7, 2026
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
7
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Oct 7, 2026 | n/a | Not reported |
| Industry KEV feed | Oct 7, 2026 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| REDCap | >= 13.3.0 | n/a |
Timeline
Publicly disclosed
Sep 20, 2026
Last updated
Sep 22, 2026
Added to CIRCL KEV
Oct 7, 2026
Added to Industry KEV feed
Oct 7, 2026
Weakness Type
- CWE-73 External Control of File Name or Path
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
FAQ
Common Questions.
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…
Affected: REDCap versions >= 13.3.0. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Oct 7, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-90817 On Your Attack Surface?
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