CVE-2025-63828
Medium · 6.1Backdrop CMS Host Header Injection vulnerability
CVSS
6.1
EPSS
0.2%
Published
Nov 18, 2025
CISA due date
—
The record
Host Header Injection vulnerability in Backdrop CMS 1.32.1 allows attackers to manipulate the Host header in password reset requests, leading to redirects to malicious domains and potential session hijacking via cookie injection.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Packagist | backdrop/backdrop | 0 | No fix |
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- GHSA-ffpg-gm3h-4p5p Backdrop CMS Host Header Injection vulnerability Same vulnerability
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