Vulnerability · Published Jul 10, 2026 · Assigned by drupal
CVE-2026-55809Flag attendance field - Critical - PHP object injection - SA-CONTRIB-2026-049
High 8.1
In plain English
A high-severity security flaw in Flag attendance field from Drupal. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 62.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist:https://packages.drupal.org/8 | drupal/flag_attendance_field | 1.2.0 | DRUPAL-CONTRIB-2026-049 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Drupal | Flag attendance field | 0.0.0 – before 1.2 |
Weakness: CWE-915 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N