PatchSiren cyber security CVE debrief
CVE-2026-8424 jay_patel CVE debrief
CVE-2026-8424 documents a Cross-Site Request Forgery (CSRF) vulnerability in the Remove Yellow BGBOX WordPress plugin affecting all versions up to and including 1.0. The flaw stems from missing or incorrect nonce validation on the 'rybb_api_settings' administrative page. An unauthenticated attacker can exploit this by inducing a site administrator to perform an action (such as clicking a malicious link), resulting in unauthorized modification of the plugin's stored configuration settings. The vulnerability was published on 2026-05-20 and carries a CVSS 3.1 score of 4.3 (MEDIUM severity). The weakness is classified as CWE-352 (Cross-Site Request Forgery). No patch is currently available, and the CVE status is listed as Deferred in the NVD.
- Vendor
- jay_patel
- Product
- Remove Yellow BGBOX
- CVSS
- MEDIUM 4.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-05-20
- Original CVE updated
- 2026-05-20
- Advisory published
- 2026-05-20
- Advisory updated
- 2026-05-20
Who should care
WordPress site administrators using the Remove Yellow BGBOX plugin; security teams managing WordPress deployments; web application firewall operators seeking to implement virtual patching for CSRF vulnerabilities in administrative interfaces.
Technical summary
The Remove Yellow BGBOX plugin for WordPress fails to implement proper nonce validation on its administrative settings page (rybb_api_settings). This CSRF vulnerability allows unauthenticated attackers to forge requests that modify plugin configuration when an authenticated administrator is tricked into executing the request. The attack requires user interaction but no authentication, with integrity impact limited to configuration changes. The vulnerability affects all known versions through 1.0, with no patch currently available.
Defensive priority
medium
Recommended defensive actions
- Verify whether the Remove Yellow BGBOX plugin is installed on WordPress sites and assess version exposure (affected: ≤1.0).
- Apply the principle of least privilege for administrative accounts and restrict access to the WordPress admin panel to trusted IP ranges where feasible.
- Implement additional CSRF protections at the web application firewall (WAF) layer for administrative endpoints if the plugin cannot be immediately removed.
- Monitor for unexpected changes to plugin configuration settings that may indicate exploitation attempts.
- Consider removing or disabling the plugin until a patched version becomes available, given the Deferred status in NVD and absence of a disclosed fix.
Evidence notes
The vulnerability was reported by Wordfence and is documented in the NVD with references to specific source code locations in the plugin's repository. The CVSS vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) confirms network attack vector, low attack complexity, no privileges required, user interaction required, and low integrity impact with no confidentiality or availability impact.
Official resources
2026-05-20