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Blog2Social <= 6.9.3 — PHP Object Injection

02b61eb1-a93f-4437-87de-d698af8ef9f6Published · Updated

Action summary

Affected: ≤6.9.3Update to 6.9.4 or newer

All remediation steps
Watch plugin
Severity
High8.5
CVSS
8.5
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:H Attack complexity
High
PR:L Privileges required
Low
UI:N User interaction
None
S:C Scope
Changed
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-502 PHP Object Injection
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Blog2Social: Social Media Auto Post & Scheduler blog2social

  1. Affected≤ 6.9.3
  2. Patched in6.9.4

Update to 6.9.4 or newer.

You are affected if you run ≤ 6.9.3. Version 6.9.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Blog2Social: Social Media Auto Post & Scheduler.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 6.9.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Blog2Social: Social Media Auto Post & Scheduler to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence.

The Blog2Social plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including 6.9.3 due to the use of unserialize on user supplied input retrieved from the 'b2s-post-meta-box-best-time-settings' and 'assignList' parameters.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Blog2Social: Social Media Auto Post & Scheduler

All 30
More vulnerabilities in Blog2Social: Social Media Auto Post & Scheduler
SeverityVulnerabilityCVEPublished
Medium4.3Authenticated (Contributor+) Insecure Direct Object Reference to Sensitive Information Exposure
≤9.1.4Update to 9.1.5
CVE-2026-108092
Medium4.3Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via Multiple AJAX Handlers
≤9.1.0Update to 9.1.1
CVE-2026-92829
Medium4.3Missing Authorization
≤9.0.0Update to 9.1.0
CVE-2026-89030
Medium4.3Insecure Direct Object Reference
≤9.0.0Update to 9.1.0
CVE-2026-89031
Medium4.3Authenticated (Subscriber+) Username Enumeration
≤9.0.0Update to 9.1.0
CVE-2026-89029

Same weakness (PHP Object Injection)

All PHP Object Injection
Other PHP Object Injection 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 8.5

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
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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