Slider Hero <= 8.2.0 - Cross-Site Request Forgery Bypass
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
The Slider Hero plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 8.2.0. This is due to missing or incorrect nonce validation on the qc_slider_hero_duplicate() function. This makes it possible for unauthenticated attackers to duplicate slides via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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 |
|---|---|---|---|---|---|
| quantumcloud | Slider Hero with Video Background, Animation | up to 8.2.0 | — | No fix listed | CNA |
- Slider Hero with Video Background, Animation Vendorquantumcloud Affected up to 8.2.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:quantumcloud:slider_hero:*:*:*:*:*:wordpress:*:* | up to 8.2.0 | Vulnerable | quantumcloud |
- cpe:2.3:a:quantumcloud:slider_hero:*:*:*:*:*:wordpress:*:* Versions up to 8.2.0 Vulnerable ·quantumcloud
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4424
- 2026-10-03 Alias added: GHSA-6vc4-vj2v-qvwx
References
Advisory 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e6d195cd-4df8-4926-b834-d695fc05f81d?source=cve
- https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
- https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
More quantumcloud Slider Hero vulnerabilities
- TI-2022-02836 Slider Hero < 8.4.4 - Admin+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 4.8
- TI-2021-06793 Slider Hero < 8.2.7 - Contributor+ SQL Injection CVSS 3.1HIGH 8.8
Sources
- CVE-2021-4424 · CVE Program
- CVE-2021-4424 · NVD
- FIRST EPSS
- GHSA-6vc4-vj2v-qvwx · 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