Bold Builder <= 5.3.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via additional_settings Parameter
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 Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘additional_settings’ parameter in all versions up to, and including, 5.3.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| boldthemes | Bold Page Builder | up to 5.3.6 | — | No fix listed | CNA |
- Bold Page Builder Vendorboldthemes Affected up to 5.3.6 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bold-themes:bold_page_builder:*:*:*:*:*:*:*:* | — | — | boldthemes |
- cpe:2.3:a:bold-themes:bold_page_builder:*:*:*:*:*:*:*:* Versions — — ·boldthemes
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-5286
- 2026-10-03 Alias added: GHSA-qhm6-4q4w-cv6h
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9ae076e4-ad15-4069-be10-f0f4aced4132?source=cve
- https://plugins.trac.wordpress.org/browser/bold-page-builder/tags/5.3.6/content_elements/bt_bb_content_slider/bt_bb_content_slider.php#L7
- https://plugins.trac.wordpress.org/browser/bold-page-builder/tags/5.3.6/content_elements/bt_bb_content_slider/bt_bb_content_slider.php#L156
- https://plugins.trac.wordpress.org/browser/bold-page-builder/tags/5.3.6/content_elements/bt_bb_content_slider/bt_bb_content_slider.php#L176
- https://wordpress.org/plugins/bold-page-builder/#developers
- https://plugins.trac.wordpress.org/changeset/3302452
- https://plugins.trac.wordpress.org/browser/bold-page-builder/tags/5.3.7/content_elements/bt_bb_content_slider/bt_bb_content_slider.php#L156
More boldthemes vulnerabilities
- TI-2021-06613 Bello < 1.6.0 - Unauthenticated Blind SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2022-04424 Bold Timeline Lite < 1.1.5 - Contributor+ Stored XSS via Shortcode CVSS 3.1MEDIUM 5.4
- TI-2026-21842 WordPress Nifty theme <= 1.4.1 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-37582 WordPress Addison theme < 1.4.8 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-26241 WordPress Medicare Theme <= 2.1.0 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-26237 WordPress Avantage Theme <= 2.4.9 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-5286 · CVE Program
- CVE-2025-5286 · NVD
- FIRST EPSS
- GHSA-qhm6-4q4w-cv6h · 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