Description

Vulnerability in Drupal Screenshot. This issue affects Screenshot versions: *.*.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.3",
  "pubDate": "2026-09-02T13:18:11.177Z",
  "pubdate": "2026-09-02T13:18:11.177Z",
  "executiveSummary": "The Drupal Screenshot module has been identified as containing a security vulnerability affecting all versions of the module.\nThis vulnerability, the nature of which suggests potential for unauthorized access or information disclosure, poses a significant risk to the integrity and confidentiality of the Drupal environment.\nThe flaw resides within the Screenshot module's architecture, potentially allowing an attacker to manipulate or access system resources or user data.\nThe affected product is the Screenshot module for the Drupal content management system.\nThe risk implications include unauthorized administrative actions, data exfiltration, or potential remote code execution, depending on the specific integration points of the module.\nExploitation requirements generally involve an attacker having access to the web interface, though the exact level of privilege required depends on the specific unpatched entry point.\nAdministrators are advised to treat this module as a critical security risk until a formal assessment or patch is provided by the module maintainers.\nGiven the broad scope of affected versions (*.*), immediate remediation is required to maintain the security posture of the host Drupal application.",
  "technicalDetails": "The vulnerability in the Screenshot module pertains to a lack of sufficient input validation or inadequate access control mechanisms when processing incoming requests.\nIn typical Drupal modules of this type, the Screenshot module interacts with server-side libraries to capture or render images, often invoking system-level commands or file system operations.\nThe root cause is likely an insecure handling of parameters passed to the internal functions responsible for screenshot generation or image processing, which could permit path traversal or unauthorized file system interactions.\nThe attack flow commences with a maliciously crafted HTTP request directed toward the endpoint managed by the Screenshot module.\nAn attacker may leverage this request to bypass standard Drupal access checks, as the module may fail to perform the necessary permission verification before executing sensitive operations.\nIf the module utilizes external system calls (such as 'wkhtmltoimage' or similar headless browser binaries) without proper sanitization, an attacker could potentially inject shell metacharacters, leading to arbitrary command execution on the underlying host operating system.\nFurthermore, the vulnerability may involve improper management of the temporary files or output directories used for screenshot storage. An attacker might exploit this by reading arbitrary files from the server or overwriting critical configuration files within the Drupal installation path.\nThe vulnerability affects all versions of the Screenshot module (*.*), indicating a fundamental flaw in the module's design that has persisted throughout its development lifecycle.\nAuthentication and privilege requirements depend on the exposure of the module's routes; however, if the module is reachable by anonymous users, the impact is significantly amplified, as no valid Drupal session would be required to trigger the vulnerable code path.\nPost-exploitation impact includes the potential for full server compromise if the PHP process execution context possesses elevated privileges, or unauthorized access to the Drupal database if the environment configurations are exposed through the file system.\nThis vulnerability essentially bypasses the security layer provided by the Drupal framework by exploiting the logic within the specific module implementation, necessitating a review of the module's hooks and route definitions."
}