What is CVE-2025-63828?

CVE-2025-63828 is a medium-severity vulnerability in Backdropcms Backdrop_cms, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2025-11-18.

How severe is CVE-2025-63828?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Backdropcms Backdrop_cms

CVE-2025-63828

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.

Vulnerability class: Open Redirect

EPSS: 0.002 (11.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Backdropcms Backdrop_cms — versions 1.32.1
N/a — versions n/a

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

cve@mitre.org (Release Notes)
cve@mitre.org (Exploit)

Frequently asked questions

What is CVE-2025-63828?: CVE-2025-63828 is a medium-severity vulnerability in Backdropcms Backdrop_cms, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2025-11-18.
How severe is CVE-2025-63828?: Medium severity. CVSS v3 base score is 6.1 out of 10.