How severe is CVE-2026-6366?

CVE-2026-6366 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-6366 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6366?

CVE-2026-6366 affects Drupal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6366?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-6366 have an EU (EUVD) identifier?

Yes. CVE-2026-6366 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30999.

When was CVE-2026-6366 published?

CVE-2026-6366 was published on 2026-05-19 and last updated on 2026-06-17.

CVE-2026-6366

CVE-2026-6366 is a medium-severity vulnerability in Drupal with a CVSS 3.x base score of 6.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-915.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30999
Weakness: CWE-915
Affected product: Drupal
Published: 2026-05-19
Last modified: 2026-06-17

Description

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core: from 8.0.0 before 10.5.9, from 10.6.0 before 10.6.7, from 11.0.0 before 11.2.11, from 11.3.0 before 11.3.7.

Frequently asked questions

What is CVE-2026-6366?: Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core: from 8.0.0 before 10.5.9, from 10.6.0 before 10.6.7, from 11.0.0 before 11.2.11, from 11.3.0 before 11.3.7.
How severe is CVE-2026-6366?: CVE-2026-6366 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-6366 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6366?: CVE-2026-6366 affects Drupal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6366?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6366 have an EU (EUVD) identifier?: Yes. CVE-2026-6366 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30999.
When was CVE-2026-6366 published?: CVE-2026-6366 was published on 2026-05-19 and last updated on 2026-06-17.

References

https://www.drupal.org/sa-core-2026-002

Affected products (1)

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

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