How severe is CVE-2019-6340?

CVE-2019-6340 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-6340 being actively exploited?

Yes. CVE-2019-6340 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2019-6340?

CVE-2019-6340 affects Drupal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-6340?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2019-6340 have an EU (EUVD) identifier?

Yes. CVE-2019-6340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-2184. It is also flagged as exploited in the EUVD (since 2022-03-25).

When was CVE-2019-6340 published?

CVE-2019-6340 was published on 2019-02-21 and last updated on 2026-06-17.

CVE-2019-6340

CVE-2019-6340 is a high-severity vulnerability in Drupal with a CVSS 3.x base score of 8.1. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-03-25). The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 92% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-03-25)
EU (EUVD) id: EUVD-2022-2184
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-03-25)
Weakness: CWE-502
Affected product: Drupal
Published: 2019-02-21
Last modified: 2026-06-17

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.)

Frequently asked questions

What is CVE-2019-6340?: 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.)
How severe is CVE-2019-6340?: CVE-2019-6340 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-6340 being actively exploited?: Yes. CVE-2019-6340 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2019-6340?: CVE-2019-6340 affects Drupal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-6340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2019-6340 have an EU (EUVD) identifier?: Yes. CVE-2019-6340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-2184. It is also flagged as exploited in the EUVD (since 2022-03-25).
When was CVE-2019-6340 published?: CVE-2019-6340 was published on 2019-02-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*

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