CVE-2026-0551Network attack vectorHinoki check available

Authenticated object injection via deserialized role metadata

Published Aug 22, 2026 · Updated Aug 22, 2026

PHP object injection in WP Folio LLC PPWP – Password Protect Pages 1.9.18 and earlier allows remote authenticated users to inject objects. The protected-post metadata path passes the post_protection_roles request value to PHP deserialization without validating its serialized object content. Contributor-level access is required; impact depends on a usable POP chain from another installed plugin or theme and can include file deletion, data disclosure, or code execution.

CVSS severity8.8
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

PHP object injection in WP Folio LLC PPWP – Password Protect Pages 1.9.18 and earlier allows remote authenticated users to inject objects. The protected-post metadata path passes the post_protection_roles request value to PHP deserialization without validating its serialized object content. Contributor-level access is required; impact depends on a usable POP chain from another installed plugin or theme and can include file deletion, data disclosure, or code execution.

The record

CVE
CVE-2026-0551
Published
Aug 22, 2026
Updated
Aug 22, 2026
Vendor
WP Folio Team
Product
PPWP – Password Protect Pages
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.9.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WP Folio Team · PPWP – Password Protect Pagesversion=0 <=1.9.18

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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