SB2026100916 - Improper access control in Actstream module for Drupal
Published: October 9, 2026
Security Bulletin ID
SB2026100916
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: CVE-2026-107257)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to the configuration route does not sufficiently check that the user editing it is the account owner. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.
Remediation
Install update from vendor's website.