What it is
CVE-2026-90817 is an unauthenticated vulnerability affecting Vanderbilt University REDCap. An unauthenticated Remote Code Execution vulnerability was found in the survey passthrough routing and Data Import processing...
Vulnerability report
Exploited in the wild
High confidence
Not in CISA KEV
CVE-2026-90817
REDCap Remote Code Execution
Vanderbilt University / REDCap · 13.3.0
- Severity
- CVSS 9.8 · Critical
- Confidence
- High
- Exploit status
- Exploited in the wild
- EPSS
- 0.9%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.
Who is affected?
Vanderbilt University / REDCap 13.3.0.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
REDCap Remote Code Execution
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.
Vendor
Product
Affected
Status
Vanderbilt University
Affected
REDCap
13.3.0
Affected
Vanderbilt University
Unaffected
REDCap
16.0.49
17.3.10
17.4.4
Unaffected
- Published
- 20 Sep 2026
- Exploitation Reported
- 13 Oct 2026
- Attack vector
- Remote
- Complexity
- Low
- Privileges
- None
- User interaction
- None
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-90817
- securifera.com/advisories securifera.com · CVE Record https://www.securifera.com/advisories/
Exploitation evidence
Why Previdian marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
Palo Alto Unit42
A trusted third party reported exploitation.
Proof of concept available
GitHub
Public scanner or PoC coverage increases practical exploitability.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the Previdian Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| Palo Alto Unit42 First | 2026-10-13 10:34 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- User-Agents
- Callback hosts
- 0
- 0
- 0
Request targets and User-Agents available in Pro. Callback host details available in Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
9.8
Critical
Potential damage if exploited. Separate from whether attackers are using it.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.9%
Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
securifera/CVE-2026-90817
github · Created 2026-10-01 15:34:52 UTC · 0 stars · AI assessment 90%
REDCap DataImport RCE
Farih123/CVE-2026-90817
github · Created 2026-09-26 01:27:59 UTC · 0 stars · AI assessment 85%
yulisec/CVE-2026-90817
github · Created 2026-09-24 07:39:38 UTC · 1 stars · AI assessment 85%
ExDev994/CVE-2026-90817
github · Created 2026-09-21 06:07:55 UTC · 0 stars · AI assessment 90%
murrez/CVE-2026-90817
github · Created 2026-09-21 04:05:26 UTC · 1 stars · AI assessment 85%
Unauth REDCap RCE (CVE-2026-90817) mass check PoC — requires public survey hash for full validation.
Timeline
From disclosure to observed exploitation
-
10:34 UTC
Added to Previdian KEV Feed
High-confidence, third-party attested exploitation
-
11:20 UTC
Added to the Previdian watchlist
Pro and Enterprise Watch users had 3 weeks of early warning before Previdian confirmed it as a KEV.
-
04:05 UTC
Public PoC available
Public proof-of-concept code published
-
12:05 UTC
CVE published
Vulnerability disclosed publicly
-
17:35 UTC
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2026-90817
Sample API response{
"cve_id": "CVE-2026-90817",
"confidence": "High",
"cvss_score": 9.8,
"cvss_estimated": false,
"epss_score": 0.00875,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}