What is CVE-2026-107249?

CVE-2026-107249 is a critical-severity vulnerability in Drupal Block Ajax, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 9.8/10. Published 2026-10-30.

How severe is CVE-2026-107249?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Drupal Block Ajax

CVE-2026-107249

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.

Vulnerability class: Mass Assignment

Published 2026-10-30 · last modified 2026-10-30.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (8.6th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Drupal Block Ajax

Weakness classification (CWE)

CWE-915 — Improperly Controlled Modification of Dynamically-Determined Object Attributes

References

www.drupal.org/sa-contrib-2026-192

Frequently asked questions

What is CVE-2026-107249?: CVE-2026-107249 is a critical-severity vulnerability in Drupal Block Ajax, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 9.8/10. Published 2026-10-30.
How severe is CVE-2026-107249?: Critical severity. CVSS v3 base score is 9.8 out of 10.