VulnerabilityAwaiting Analysis

CVE-2026-16644

Incorrect Authorization vulnerability in Drupal Webform REST allows Forceful Browsing.

CRITICAL 9.1EPSS 0.31%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Incorrect Authorization vulnerability in Drupal Webform REST allows Forceful Browsing. This issue affects Webform REST versions: from 0.0.0 to 4.1.0.

CVSS 3.1: 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS: 0.31% probability · 24th percentile
CISA KEV: Not listed
Weakness: CWE-863
Source: mlhess@drupal.org

References

https://www.drupal.org/sa-contrib-2026-087

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.