CVE-2025-26978 HIGH

CVE-2025-26978: WordPress FS Poster plugin <= 6.5.8 - SQL Injection vulnerability

Vendor Fs-Code
Product FS Poster
Weakness CWE-89 · SQLi
Published March 15, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

8.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in fs-code FS Poster fs-poster.This issue affects FS Poster: from n/a through <= 6.5.8.

Explanation of Vulnerability in Simple Terms

02Summary

FS Poster versions 6.5.8 and earlier contain a SQL injection vulnerability in database query handling. An authenticated user with low privileges can craft malicious input to execute arbitrary SQL commands. This can expose sensitive data across the application and degrade performance. Update to a version newer than 6.5.8.

What an attacker can do

03Attacker Capabilities

Execute arbitrary SQL queries to read sensitive data from the database.

Potential impact on your site

04Site Impact

Unauthorized access to database contents including user data, posts, and configuration; potential service disruption.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account on the site.

Key dates

06Disclosure timeline

March 15, 2025 CVE published
April 28, 2026 Record updated