EUVD-2026-43081
GHSA-25f6-4hrw-j87c
Severity by source
AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Network-delivered exploit requires admin authentication (PR:H) plus complex preconditions (AC:H); no availability impact reported by vendor.
Primary rating from Vendor (drupal).
CVSS VectorVendor: drupal
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
5DescriptionCVE.org
Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.
AnalysisAI
Object injection via a mass assignment flaw in Drupal Core enables an authenticated administrator to manipulate dynamically-determined PHP object attributes, potentially compromising confidentiality and data integrity of the application. Affected versions span multiple active and end-of-life branches: 10.5.x through 10.5.12, 10.6.0 through 10.6.11, 11.2.0 through 11.2.14, 11.3.0 through 11.3.12, and the entirely unsupported 11.0.x and 11.1.x branches. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an active, authenticated session with Drupal administrator-level privileges (PR:H), meaning the attacker must have already obtained or compromised valid high-privilege credentials - standard user or editor accounts are insufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N yields a base score of 5.9, which accurately reflects the dual constraints of high attack complexity and required high-privilege (administrator-level) authentication. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained or compromised Drupal administrator credentials submits a crafted HTTP request to a vulnerable Drupal Core endpoint, injecting unexpected object attributes through the mass assignment pathway. If a suitable PHP gadget chain exists within the Drupal codebase or installed dependencies, the injected property values trigger unintended method calls during object processing, resulting in server-side code execution or unauthorized access to sensitive stored content. … |
| Remediation | Upgrade Drupal Core using the vendor patch confirmed available via the official advisory at https://www.drupal.org/sa-core-2026-005. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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