High severity · published Jul 10, 2026
CVE-2026-55809
Flag attendance field - Critical - PHP object injection - SA-CONTRIB-2026-049
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DR
Drupal · Drupal
0.0.0 before 1.2 · source: vendor
FA
Flag Attendance Field · Flag Attendance Field Project
before 1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55809
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55809
Vendor Advisory
https://www.drupal.org/sa-contrib-2026-049
More from Drupal
9.8
CVE-2026-9082
Drupal core - Highly critical - SQL injection - SA-CORE-2026-004
9.8
CVE-2018-7602
Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004
9.8
CVE-2018-7600
Drupal Core Remote Code Execution Vulnerability
8.8
CVE-2020-13671
Drupal core Un-restricted Upload of File
8.1
CVE-2019-6340
Drupal core - Highly critical - Remote Code Execution