Server-Side Request Forgery (SSRF) in Drupal - CVE-2026-55807
Published: June 18, 2026
Vulnerability identifier: #VU134797
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-55807
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input within URL discovery code. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Affected software
Drupal
How to mitigate CVE-2026-55807
Install updates from vendor's website.
Drupal - addressed in versions 10.5.12, 10.6.11, 11.2.14, 11.3.12