Description

Drupal Core is prone to an arbitrary file overwrite vulnerability. This can be coupled with other existing vulnerabilities to affect the vulnerable application in various ways. Drupal Core versions 8.x.x ranging from 8.0.0 and up to and including 8.7.14 are vulnerable.

Remediation

Update to Drupal Core version 8.9.13 or latest

References

https://www.drupal.org/sa-core-2021-001

Related Vulnerabilities

WordPress Plugin Appointment Booking Calendar Cross-Site Scripting (1.3.34)

Liferay DXP Incorrect Authorization Vulnerability (CVE-2025-62275)

Ampache Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2024-51484)

SharePoint Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2026-70306)

WordPress Plugin BetterDocs-Best Documentation & Knowledge Base Cross-Site Scripting (1.8.4)

Severity

High

Classification

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Tags

Missing Update CWE-73 CVE-2020-36193