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CVE-2026-17559

MEDIUM 5.3 CVSS 3.1
Published
August 21, 2026
Last modified
October 16, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-863
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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 WordPress components

  • Passster – Password Protect Pages and Content Plugin · content-protector
    Confirmed match Active
    From 4.3.3 (including) to 4.3.9 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Passster — From 4.3.3 (including) to 4.3.9 (excluding)

References

  • wpscan.com https://wpscan.com/vulnerability/28a48c1c-e162-4e8a-b450-5568fb3a3fc8/
  • nvd.nist.gov Official NVD record