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5.3 Medium

CVE-2026-17559 The Passster WordPress plugin before 4.3.9 does not correctly match its own public endpoint paths when deciding which…

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.

Affected products and versions

Product Affected versions Fixed in
Passster 4.3 4.3.3 → < 4.3.9 4.3.9

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Passster

The 10 CVEs of Passster →
CVE-2025-15490 The Passster WordPress plugin before 4.2.26 has a flaw in its global protection checks, allowing unauthenticated users… 5.3 Medium CVE-2025-15489 The Passster WordPress plugin before 4.2.24 does not handle input properly in an AJAX action, allowing unauthenticated… 5.3 Medium CVE-2025-15674 The Passster WordPress plugin before 4.3.7 does not restrict low-privilege users holding the edit_posts capability… 2.7 Low CVE-2026-16604 The Passster WordPress plugin before 4.3.6 outputs password-protected block content in the public page response… 7.5 High
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