Fonto – Custom Web Fonts Manager <= 1.2.1 - Authenticated (Author+) Stored Cross-Site Scripting via SVG File Upload
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Fonto – Custom Web Fonts Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 1.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| vlad.olaru | Fonto – Custom Web Fonts Manager | up to 1.2.1 | — | No fix listed | CNA |
- Fonto – Custom Web Fonts Manager Vendorvlad.olaru Affected up to 1.2.1 Fixed in — No fix listed CNA
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vladolaru:fonto_custom_web_fonts_manager:*:*:*:*:*:*:*:* | — | — | vlad.olaru |
- cpe:2.3:a:vladolaru:fonto_custom_web_fonts_manager:*:*:*:*:*:*:*:* Versions — — ·vlad.olaru
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-8920
- 2026-10-03 Alias added: GHSA-5vxc-2qqr-5x28
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/358be91d-cb00-429b-a4ed-69bf81e4d19e?source=cve
- https://plugins.trac.wordpress.org/browser/fonto/trunk/includes/class-fonto.php#L373
- https://wordpress.org/plugins/fonto/#developers
- https://plugins.trac.wordpress.org/changeset/3169936/
- https://plugins.trac.wordpress.org/changeset/3169936/#file2
More vlad.olaru vulnerabilities
- TI-2025-22964 WordPress Fonto plugin <= 1.2.2 - Arbitrary File Download vulnerability CVSS 3.1MEDIUM 4.9
Sources
- CVE-2024-8920 · CVE Program
- CVE-2024-8920 · NVD
- FIRST EPSS
- GHSA-5vxc-2qqr-5x28 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences