GHSA-ffpg-gm3h-4p5p · Severity: medium · Ecosystem: composer — Backdrop CMS Host Header Injection vulnerability
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.
Conclusion & alert: CVE-2025-63828 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.04%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-16 | 0.05% | 0.04% | -0.01% |
| 2 | 2026-03-20 | 0.02% | 0.05% | +0.03% |
| 3 | 2025-11-19 | — | 0.02% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.1 | MEDIUM |
|
2.8 | 2.7 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-ffpg-gm3h-4p5p · Severity: medium · Ecosystem: composer — Backdrop CMS Host Header Injection vulnerability
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| backdropcms | backdrop_cms | 1.32.1 | cpe:2.3:a:backdropcms:backdrop_cms:1.32.1:*:*:*:*:*:*:* |