What it is
CVE-2019-6340 is an unauthenticated Drupal core - Highly critical - Remote Code Execution. Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2019-6340
Drupal core - Highly critical - Remote Code Execution
Drupal / Drupal Core · affected before 8.5.11
- Severity
- CVSS 8.1 · High
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 92.0%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Drupal / Drupal Core affected before 8.5.11.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Drupal core - Highly critical - Remote Code Execution
Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before 8.6.10. This can lead to arbitrary PHP code execution in some cases.
A site is only affected by this if one of the following conditions is met: The site has the Drupal 8 core RESTful Web Services (rest) module enabled and allows PATCH or POST requests, or the site has another web services module enabled, like JSON:API in Drupal 8, or Services or RESTful Web Services in Drupal 7. (Note: The Drupal 7 Services module itself does not require an update at this time, but you should apply other contributed updates associated with this advisory if Services is in use.)
Vendor
Product
Affected
Status
Drupal
Drupal Core
Before 8.5.11
Affected
Drupal
Drupal Core
Before 8.6.10
Affected
- Published
- 21 Feb 2019
- Exploitation Reported
- 25 Mar 2022
- Attack vector
- Remote
- Complexity
- High
- Privileges
- None
- User interaction
- None
Tags
nuclei_scanner
windows
cisa
metasploit
php
drupal
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2019-6340
- 46452 exploit-db.com · Exploit https://www.exploit-db.com/exploits/46452/
- 46510 exploit-db.com · Exploit https://www.exploit-db.com/exploits/46510/
- 46459 exploit-db.com · Exploit https://www.exploit-db.com/exploits/46459/
- 107106 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/107106
- synology.com/security/advisory/Synology_SA_19_09 synology.com · CVE Record https://www.synology.com/security/advisory/Synology_SA_19_09
- drupal.org/sa-core-2019-003 drupal.org · CVE Record https://www.drupal.org/sa-core-2019-003
Exploitation evidence
Why KEV Intelligence 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
CISA
Independent exploitation attestation added to the KEV Intelligence record.
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 KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-03-25 00:00 UTC |
| The Shadowserver | 2026-07-08 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
Metasploit template detected 28 Apr 2025.
View Metasploit template (opens in new tab)Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →Scanner Artifacts
Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/drupal_restws_unserialize.rb | 28 Apr 2025 |
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-6340.yaml | 25 Apr 2025 |
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
8.1
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
92.0%
Weaknesses
All CVSS Scores
CVSS v3.1
8.1
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
6.8
Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
Drupal - Remote Code Execution
nuclei · Created Unknown
Timeline
From disclosure to observed exploitation
-
KEV confirmed by The Shadowserver
Exploitation attested by an external source
-
Metasploit module available
Exploit module available
-
Public PoC available
Public proof-of-concept code published
-
Nuclei template available
Scanner coverage available
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
CVE published
Vulnerability disclosed publicly
-
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-2019-6340
Free JSON includes basic KEV fields{
"cve_id": "CVE-2019-6340",
"confidence": "Confirmed",
"cvss_score": 8.1,
"cvss_estimated": false,
"epss_score": 0.92017,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.