CVE-2025-63828 Backdrop CMS Host Header Injection vulnerability
Attackers can manipulate Host headers in password resets to redirect users to malicious domains, potentially hijacking sessions via cookie injection.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-63828?
CVE-2025-63828 is a medium-severity vulnerability in n/a, published on 18 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-601
Which versions are affected by CVE-2025-63828?
2 open source packages ship an affected version, including backdrop/backdrop. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
backdrop/backdrop Packagist | All versions to 1.32.0 | None |
backdrop/backdrop Packagist | All versions to 1.32.0 | None |
Products include Backdropcms Backdrop Cms.
How do I fix CVE-2025-63828?
No fix has been published for CVE-2025-63828 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-63828 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63828 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-ffpg-gm3h-4p5p.