MEDIUM

CVE-2025-63828

CVSS v3

6.1

MEDIUM

EPSS Score

0.2 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

backdrop/backdropPackagistall versions · no fixed version listed

Full record on NVD

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.

Technical details

Published: 2025-11-18

Frequently asked questions

What is CVE-2025-63828?

Is CVE-2025-63828 actively exploited?

Active exploitation of CVE-2025-63828 has not been confirmed. Its EPSS score was 0.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-63828?

CVE-2025-63828 has a CVSS v3 base score of 6.1 (MEDIUM severity).

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