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
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. No active exploitation is confirmed (not in CISA KEV) and EPSS sits at just 0.16% (6th percentile), making this a patch-priority rather than emergency-response scenario.
Technical ContextAI
CWE-915 describes a class of flaws where attacker-supplied data is used to set or override attributes on a dynamically resolved PHP object, effectively enabling mass-assignment or property pollution that drives PHP object deserialization or injection chains. In a CMS like Drupal Core (CPE: cpe:2.3:a:drupal:drupal_core:*:*:*:*:*:*:*:*), object injection typically occurs when user-controlled input reaches object constructors, hydration methods, or property setters without sanitization, potentially allowing an attacker to instantiate arbitrary PHP classes and chain their magic methods (__wakeup, __destruct, etc.) for code execution. The 'Code Injection' tag reinforces that successful exploitation can progress beyond attribute corruption to arbitrary code execution in the PHP runtime environment. CVSS AV:N confirms the vulnerable endpoint is network-reachable, while AC:H and PR:H indicate the attack path requires specific pre-conditions and a high-privilege session.
RemediationAI
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. Sites running the entirely unsupported 11.0.x or 11.1.x branches must migrate to a supported minor version and apply patches there, as no backport is indicated for those lines. Full patch details and download links are in the vendor advisory at https://www.drupal.org/sa-core-2026-006. As a compensating control prior to patching, restrict Drupal admin interface access (typically /admin/*) to trusted IP ranges via web server or firewall rules - this does not eliminate risk from compromised admin credentials but removes network-level access for unauthenticated or external actors, directly targeting the AC:H and PR:H pre-conditions. Audit active admin accounts and revoke any unused or broadly shared high-privilege credentials to reduce the insider-threat surface.
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External POC / Exploit Code
Leaving vuln.today