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PostX <= 4.1.35 — Authenticated (Editor+) Privilege Escalation

CVE-2025-55707Published · Updated

Action summary

Affected: ≤4.1.35Update to 4.1.36 or newer

All remediation steps
Watch plugin
Severity
High7.2
CVSS
7.2
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:H Privileges required
High
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-269 Privilege Escalation
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Post Grid Gutenberg Blocks – PostX ultimate-post

  1. Affected≤ 4.1.35
  2. Patched in4.1.36

Update to 4.1.36 or newer.

You are affected if you run ≤ 4.1.35. Version 4.1.36 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Post Grid Gutenberg Blocks – PostX.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 4.1.36, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Post Grid Gutenberg Blocks – PostX to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Denver Jackson.

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.1.35. This makes it possible for authenticated attackers, with Editor-level access and above, to elevate their privileges.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Post Grid Gutenberg Blocks – PostX

All 29
More vulnerabilities in Post Grid Gutenberg Blocks – PostX
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via display_name User Field
≤5.1.0Update to 5.1.1
CVE-2026-96840
Medium5.3Unauthenticated Information Exposure
≤5.0.40Update to 5.0.41
CVE-2026-86783
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Post Comments Block
≤5.0.13Update to 5.0.14
CVE-2026-5158
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'searchnoresult' Block Attribute
≤5.0.32Update to 5.0.33
CVE-2026-15100
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'moreResultsText' Block Attribute
≤5.0.31Update to 5.0.32
CVE-2026-13253

Same weakness (Privilege Escalation)

All Privilege Escalation
Other Privilege Escalation vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 7.2

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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