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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 21 Aug 2026 13:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-284

Fri, 21 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-863

Fri, 21 Aug 2026 12:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Content Protector (Passster) < 4.3.9 - Unauthenticated Protected Content Disclosure via REST Path Allowlist Bypass
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-08-21T12:47:20.891Z

Reserved: 2026-07-27T13:36:40.825Z

Link: CVE-2026-17559

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-21T12:16:24.750

Modified: 2026-08-21T13:16:54.783

Link: CVE-2026-17559

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T13:30:04Z

Weaknesses