CVE-2019-6340
Drupal Core Remote Code Execution Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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.)
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 92.02% probability · 100th percentile
- Public exploits
- 3 in Exploit-DB · verified · first 23 February 2019
- CISA KEV
- Listed 25 March 2022 · due 15 April 2022
- Weakness
- CWE-502
- Affected
- drupal/drupal
- Source
- mlhess@drupal.org
EPSS 92.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-6340
Public exploits (3)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-46510source ↗ | Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize() Remote Command Execution (Metasploit)php · Metasploit | remote | 7 March 2019 | yes |
| EDB-46459source ↗ | Drupal < 8.6.9 - REST Module Remote Code Executionphp · leonjza | webapps | 25 February 2019 | no |
| EDB-46452source ↗ | Drupal < 8.6.10 / < 8.5.11 - REST Module Remote Code Executionphp · Charles Fol | webapps | 23 February 2019 | no |
References
- http://www.securityfocus.com/bid/107106Broken Link, Third Party Advisory, VDB Entry
- https://www.drupal.org/sa-core-2019-003Mitigation, Vendor Advisory
- https://www.exploit-db.com/exploits/46452/Patch, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46459/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46510/Exploit, Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_09Third Party Advisory
- http://www.securityfocus.com/bid/107106Broken Link, Third Party Advisory, VDB Entry
- https://www.drupal.org/sa-core-2019-003Mitigation, Vendor Advisory
- https://www.exploit-db.com/exploits/46452/Patch, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46459/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46510/Exploit, Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_09Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-6340US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.