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TI-2026-40290 Aliases CVE-2026-55809GHSA-66vp-2cwc-4pv3

Flag attendance field - Critical - PHP object injection - SA-CONTRIB-2026-049

Priority LOW 38CWE-915Published · Updated

Key facts

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

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

Summary

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Flag attendance field allows Object Injection. This issue affects Flag attendance field versions: from 0.0.0 to 1.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00433 37th percentileScored 2026-11-07
Fix Fixed Flag attendance field (Drupal): 1.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
DrupalFlag attendance field0.0.0 to before 1.21.2Patch availableCNA
  • Flag attendance field VendorDrupal Affected 0.0.0 to before 1.2 Fixed in 1.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:flag_attendance_field_project:flag_attendance_field:*:*:*:*:*:drupal:*:*before 1.2VulnerableFlag Attendance Field Project
  • cpe:2.3:a:flag_attendance_field_project:flag_attendance_field:*:*:*:*:*:drupal:*:* Versions before 1.2 Vulnerable ·Flag Attendance Field Project

Remediation

  • Fix · CNA Flag attendance field (Drupal) Fixed in 1.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55809
  2. 2026-10-03 Alias added: GHSA-66vp-2cwc-4pv3

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
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Sources