Host Header Injection vulnerability in Backdrop CMS 1.32.1 allows attackers to manipulate…
Priority MEDIUM 60CWE-601Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-601.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00229 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | backdrop/backdrop (Packagist) | up to 1.32.0 | — | No fix listed | GHSA-ffpg-gm3h-4p5p |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- backdrop/backdrop (Packagist) Vendor— Affected up to 1.32.0 Fixed in — No fix listed GHSA-ffpg-gm3h-4p5p
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:backdropcms:backdrop_cms:1.32.1:*:*:*:*:*:*:* | 1.32.1 | Vulnerable | backdropcms |
- cpe:2.3:a:backdropcms:backdrop_cms:1.32.1:*:*:*:*:*:*:* Versions 1.32.1 Vulnerable ·backdropcms
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-63828
- 2026-10-03 Alias added: GHSA-ffpg-gm3h-4p5p
References
More backdropcms Backdrop Cms vulnerabilities
- TI-2023-14781 A stored Cross-site scripting (XSS) issue in Text Editors and Formats in Backdrop CMS… CVSS 3.1MEDIUM 4.8
- TI-2022-20386 Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 4.8
- TI-2022-20385 Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 4.8
- TI-2025-18731 Cross-site scripting in backdropcms backdrop CVSS 3.1MEDIUM 4.4
- TI-2019-10981 Backdrop CMS 1.12.x before 1.12.8 and 1.13.x before 1.13.3 allows the upload of… CVSS 3.0CRITICAL 9.8
- TI-2022-20383 Backdrop CMS 1.22.0 has Unrestricted File Upload vulnerability via 'themes' that allows… CVSS 3.1HIGH 7.2
Sources
- CVE-2025-63828 · CVE Program
- CVE-2025-63828 · NVD
- FIRST EPSS
- GHSA-ffpg-gm3h-4p5p · GitHub Advisory Database · CC BY 4.0
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