Passster category protection is bypassed through the WordPress REST API
Passster before 4.3.6 does not apply its category-based access restrictions to the core WordPress REST API. An unauthenticated visitor can request affected posts through the API and receive their full title, excerpt and content despite the category lock. This unscored record received deeper review because it is an unauthenticated protected-content disclosure primitive. The CNA does not disclose whether every core post endpoint or only particular response contexts are affected.
- Component
- Passster
- Plugin slug
passster- Affected
- < 4.3.6
- Safe version
4.3.6- Published
- Aug 05, 2026
This CVE was published Aug 05, 2026 and is one of 6 known issues for this plugin.
Update, patch or deactivate.
Update Passster to 4.3.6 or later. Treat category-protected post content exposed by the core REST API on a vulnerable site as potentially public and rotate embedded secrets where applicable.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Passster WordPress plugin before 4.3.6 does not enforce its category-based content protection on the WordPress REST API, allowing unauthenticated users to read the full content, title, and excerpt of category-locked posts through the core REST API.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N