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PHP object injection in Drupal Block AJAX

Priority MEDIUM 49CWE-915Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Tampering
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-915.

Summary

Block AJAX for Drupal, from 0.0.0 before 3.0.2, contains an improperly controlled modification of dynamically-determined object attributes (CWE-915) that allows PHP object injection. An unauthenticated remote attacker can send crafted input that makes the site unserialize attacker-controlled objects, which can lead to a complete compromise of confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Block AJAX allows Object Injection. This issue affects Block AJAX versions: from 0.0.0 to 3.0.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00394 33rd percentileScored 2026-11-07
Fix Fixed Block AJAX (Drupal): 3.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DrupalBlock AJAX0.0.0 to before 3.0.23.0.2Patch availableCNA
  • Block AJAX VendorDrupal Affected 0.0.0 to before 3.0.2 Fixed in 3.0.2 Patch available CNA

Remediation

Update Drupal Block AJAX to version 3.0.2 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Block AJAX (Drupal) Fixed in 3.0.2

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-107249
  2. 2026-10-30 Alias added: GHSA-6pcx-w9cj-f597
  3. 2026-10-30 CVSS score added · CISA ADP
  4. 2026-10-30 CISA SSVC decision points changed
  5. 2026-10-30 Priority changed: LOW → MEDIUM

References

  • TI-2026-07979 Drupal core - Highly critical - SQL injection - SA-CORE-2026-004 KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-05494 Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004 KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-05493 Improper input validation in Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-10731 Unrestricted file upload in Drupal Core KEVCVSS 3.1HIGH 8.8
  • TI-2019-04505 Drupal core - Highly critical - Remote Code Execution KEVCVSS 3.1HIGH 8.1
  • TI-2020-17477 Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks… KEVCVSS 3.1HIGH 7.8
See all 941 →

Sources