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FS Poster <= 6.5.8 — Authenticated (Subscriber+) SQL Injection

CVE-2025-26978Published · Updated

Action summary

Affected: ≤6.5.8Update to 6.5.9 or newer

All remediation steps
Watch plugin
Severity
High7.7
CVSS
7.7
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:C Scope
Changed
C:H Confidentiality
High
I:N Integrity
None
A:N Availability
None
Weakness
CWE-89 SQL Injection
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

FS Poster - WordPress Social media Auto Poster & Scheduler [Facebook, Instagram, Twitter, Pinterest] fs-poster

  1. Affected≤ 6.5.8
  2. Patched in6.5.9

Update to 6.5.9 or newer.

You are affected if you run ≤ 6.5.8. Version 6.5.9 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under FS Poster - WordPress Social media Auto Poster & Scheduler [Facebook, Instagram, Twitter, Pinterest].
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 6.5.9, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch FS Poster - WordPress Social media Auto Poster & Scheduler [Facebook, Instagram, Twitter, Pinterest] to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Rafie Muhammad.

The FS Poster - WordPress Social media Auto Poster & Scheduler plugin for WordPress is vulnerable to SQL Injection in all versions up to, and including, 6.5.8 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in FS Poster - WordPress Social media Auto Poster & Scheduler [Facebook, Instagram, Twitter, Pinterest]

All 5
More vulnerabilities in FS Poster - WordPress Social media Auto Poster & Scheduler [Facebook, Instagram, Twitter, Pinterest]
SeverityVulnerabilityCVEPublished
High8.8Authenticated (Subscriber+) Remote Code Execution via FFmpeg Path Setting
≤8.0.1Update to 8.0.2
CVE-2026-10195
Medium4.3Missing Authorization
≤6.5.8Update to 7.1.8
CVE-2025-30960
Medium6.1Reflected Cross-Site Scripting
≤6.5.8Update to 6.5.9
CVE-2025-30962
Medium4.3Cross-Site Request Forgery
≤6.5.8Update to 6.5.9
CVE-2024-37237

Same weakness (SQL Injection)

All SQL Injection
Other SQL 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 7.7

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. 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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