CVE-2026-17559
Content Protector (Passster) < 4.3.9 - Unauthenticated Protected Content Disclosure via REST Path Allowlist Bypass
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
The Passster WordPress plugin before 4.3.9 does not correctly match its own public endpoint paths when deciding which REST API requests may bypass global password protection, comparing them as an unanchored substring of the request URI rather than against the resolved route, allowing an unauthenticated attacker to read the content of globally password-protected posts and pages.
| Vendor | unknown |
| Product | passster |
| Published | Aug 21, 2026 |
| Last Updated | Aug 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Unknown / Passster
4.3.3 < 4.3.9
References
Credits
Erwan LR (WPScan) WPScan