CVE-2026-55809

highCVSS 8.1covered by 2 sourcesfirst seen 2026-07-10

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.

CSIRTS triage

What: An attacker can exploit multiple vulnerabilities in Drupal to manipulate data.
Who is affected: Deployments of Drupal are affected.
Urgency: Remediation is urgent due to the high severity of the vulnerabilities.
Action: Update to the latest version of Drupal to mitigate these vulnerabilities.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all EPSS-scored CVEs.

Advisory coverage (2)

high[UPDATE] [high] Drupal Modules: Multiple vulnerabilities allow data manipulationcert-bund · 2026-07-13
highCVE-2026-55809: Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability i…nvd · 2026-07-10

External references

NVD record for CVE-2026-55809

CVE.org record

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