EUVD-2026-43082
GHSA-x7hc-r9m3-67vr
Severity by source
AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Network-reachable admin endpoint (AV:N), high complexity for gadget-chain construction (AC:H), admin credentials required (PR:H); no availability impact observed.
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
4DescriptionCVE.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 in Drupal Core through improperly controlled modification of dynamically-determined object attributes (CWE-915) exposes sites to high-severity confidentiality and integrity compromise when triggered by an authenticated user with high privileges. Affected branches include the entire 10.x line before 10.5.12 and 10.6.11, the fully unsupported 11.0.x and 11.1.x trees, and the 11.2.x and 11.3.x lines before 11.2.14 and 11.3.12 respectively. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated session with high Drupal privileges (PR:H per CVSS vector), meaning the attacker must first obtain admin-level Drupal credentials before the injection path is reachable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Raw CVSS base score of 5.9 (Medium) is a reasonable representation of real-world risk here given the constraining metrics: AC:H means the attacker must meet non-trivial complexity conditions, and PR:H means they must already possess high-privilege (likely admin-level) Drupal credentials before exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained Drupal administrator credentials - through phishing, credential stuffing, or lateral movement - submits a specially crafted request to a privileged Drupal endpoint that passes attacker-controlled data into a dynamic object attribute assignment path. By injecting a malicious PHP object with a weaponized magic-method chain (e.g., __destruct leading to file write or system call), the attacker achieves code execution on the server under the web process account, then exfiltrates the database or site configuration. … |
| Remediation | Upgrade to the nearest fixed release for your branch: Drupal Core 10.5.12 or 10.6.11 for 10.x deployments, 11.2.14 for 11.2.x deployments, or 11.3.12 for 11.3.x deployments. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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