CVE-2025-15490

Passster <= 4.2.25 - Unauthenticated Global Content Protection Bypass

2026-02-17 00:00

Strategic Overview

Status: Patched in 4.2.26
Affected Plugin: Passster – Password Protect Pages and Content
Affected Version: <= 4.2.25
CVSS: 5.3Medium
Weakness type: CWE-693 · Protection Mechanism Failure
CVE: CVE-2025-15490

View all Passster – Password Protect Pages and Content vulnerabilities

At a glance

CVE-2025-15490 is a medium-severity Protection Mechanism Failure vulnerability in the Passster WordPress plugin, affecting versions <= 4.2.25. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.2.26; sites on affected versions should update now. Disclosed February 2026, reported by Alex Tselevich.

Vulnerability Overview

The Passster – Password Protect Pages and Content plugin for WordPress is vulnerable to protection mechanism bypass in all versions up to, and including, 4.2.25. This makes it possible for unauthenticated attackers to bypass content restrictions.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-693: Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Remediation

Update to version 4.2.26, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Passster 4.2.26 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-15490 https://www.wordfence.com/threat-intel/vulnerabilities/id/5c22eef8-b9c5-425b-91db-d2b4ff7b57d1 https://nvd.nist.gov/vuln/detail/CVE-2025-15490

Related records

Other vulnerabilities in Passster – Password Protect Pages and Content

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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