Cross-site scripting in radykal Fancy Product Designer
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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 Fancy Product Designer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'productTitle' in '_fpd_data' Order Item Meta in all versions up to, and including, 6.5.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The fpd_save_order AJAX action is registered for unauthenticated users via wp_ajax_nopriv_fpd_save_order with no nonce or capability check, and the strip_tags() sanitization applied at save time is bypassed by submitting JSON unicode escape sequences (e.g. \u003c, \u003e), which json_decode() silently converts back to literal angle brackets when the order is rendered in the admin view.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84281
- 2026-10-03 Alias added: GHSA-4wqf-6xrq-qp4m
References
More radykal vulnerabilities
- TI-2021-06662 Fancy Product Designer < 4.6.9 - Unauthenticated Arbitrary File Upload and RCE CVSS 3.1CRITICAL 9.8
- TI-2024-34722 WordPress Fancy Product Designer plugin <= 6.4.3 - Unauthenticated SQL Injection vulnerability CVSS 3.1CRITICAL 9.3
- TI-2024-00332 Fancy Product Designer < 6.1.5 - Admin+ SQL Injection CVSS 3.1MEDIUM 6.5
- TI-2024-00834 Fancy Product Designer < 6.1.8 - Reflected Cross Site Scripting CVSS 3.1MEDIUM 6.3
- TI-2024-00831 Fancy Product Designer < 6.1.81 - Admin+ Cross Site Scripting via Product Title CVSS 3.1MEDIUM 4.8
- TI-2024-34823 WordPress Fancy Product Designer plugin <= 6.4.3 - Unauthenticated Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 9.0
Sources
- CVE-2026-84281 · CVE Program
- CVE-2026-84281 · NVD
- FIRST EPSS
- GHSA-4wqf-6xrq-qp4m · 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