{ "canonical_id": "drupal--bf3b4df605", "system_id": "drupal", "display_name": "Drupal", "category": "cms", "advisory_mode": "core", "title": "Drupal core - Moderately critical - Gadget chain - SA-CORE-2025-006", "summary": "
Project: 
Drupal core
Date: 
2025-November-12
Security risk: 
Moderately critical 14\u2009\u2215\u200925 AC:Complex/A:Admin/CI:All/II:All/E:Theoretical/TD:Uncommon
Vulnerability: 
Gadget chain
Affected versions: 
>= 8.0.0 < 10.4.9 || >= 10.5.0 < 10.5.6 || >= 11.0.0 < 11.1.9 || >= 11.2.0 < 11.2.8
CVE IDs: 
CVE-2025-13081
Description: 

Drupal core contains a chain of methods that is exploitable when an insecure deserialization vulnerability exists on the site. This so-called \"gadget chain\" presents no direct threat, but is a vector that can be used to achieve remote code execution if the application deserializes untrusted data due to another vulnerability.

\n

It is not directly exploitable.

\n

This issue is mitigated by the fact that in order for it to be exploitable, a separate vulnerability must be present to allow an attacker to pass unsafe input to unserialize(). There are no such known exploits in Drupal core.

Solution: 

Install the latest version:

\n\n

Drupal 11.0.x, Drupal 10.3.x, and below are end-of-life and do not receive security coverage. (Drupal 8 and Drupal 9 have both reached end-of-life.)

Reported By: 
Fixed By: 
Coordinated By: 
", "published_at": "Wed, 12 Nov 2025 18:34:02 +0000", "updated_at": "Wed, 12 Nov 2025 18:34:02 +0000", "severity": "unknown", "cvss_score": null, "exploit_status": "unknown", "source_confidence": "official", "official_source_url": "https://www.drupal.org/sa-core-2025-006", "secondary_source_urls": [], "aliases": [], "cve_ids": [], "ghsa_ids": [], "osv_ids": [], "affected_versions": [], "fixed_versions": [], "package_name": null, "render_markdown": false, "case_path": null, "secure_code_topics": [ "authz-server-side-recheck", "xss-output-encoding", "file-upload-validation", "plugin-extension-trust-policy", "deserialization-safety" ], "status": "triage", "triage_reasons": [ "missing affected/fixed version details" ], "entity_refs": [ { "entity_id": "drupal", "entity_type": "system", "relation": "root-system", "root_system_id": "drupal", "official": true } ], "affected_components": [ { "name": "Drupal", "entity_id": "drupal", "scope": "core", "package_name": null, "official": true } ], 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