CVE-2025-12821 HIGH

CVE-2025-12821: NewsBlogger <= 0.2.5.6 - 0.2.6.1 - Cross-Site Request Forgery to Arbitrary Plugin Installation

Vendor Spicethemes
Product NewsBlogger
Weakness CWE-352 · CSRF
Published February 19, 2026
Last update February 19, 2026

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

The NewsBlogger theme for WordPress is vulnerable to Cross-Site Request Forgery in versions 0.2.5.6 to 0.2.6.1. This is due to missing or incorrect nonce validation on the newsblogger_install_and_activate_plugin() function. This makes it possible for unauthenticated attackers to upload arbitrary files and achieve remote code execution via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This is due to a reverted fix of CVE-2025-1305.

Explanation of Vulnerability in Simple Terms

02Summary

NewsBlogger versions 0.2.5.6 through 0.2.6.1 are vulnerable to cross-site request forgery (CSRF) attacks. An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions on the site without the admin's knowledge or consent. This can lead to unauthorized changes, data modification, or account compromise.

What an attacker can do

03Attacker Capabilities

Perform unauthorized actions on the site by tricking a logged-in admin into visiting a malicious webpage.

Potential impact on your site

04Site Impact

An attacker can modify site content, settings, or user accounts if they trick an admin into clicking a malicious link.

Conditions required to exploit

05Prerequisites

A site admin must be logged in and visit a page controlled by the attacker (e.g., via a phishing link).

Key dates

06Disclosure timeline

February 19, 2026 CVE published
February 19, 2026 Record updated