Host Header Injection Vulnerability in Backdrop CMS
CVE-2025-63828

6.1MEDIUM

Key Information:

Vendor

Backdrop

Status
Backdrop CMS
Vendor
CVE Published:
18 November 2025

What is CVE-2025-63828?

A critical issue exists in Backdrop CMS version 1.32.1, where unauthorized manipulation of the Host header in password reset requests can lead to redirections to malicious domains. Attackers could exploit this vulnerability to hijack user sessions by injecting harmful cookies, potentially compromising user security and data integrity.

References

https://github.com/mertdurum06/BackdropCms-1.32.1/
https://github.com/mertdurum06/BackdropCms-1.32.1/blob/ma...

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.