CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
What the vulnerability does
The Old Posts Highlighter plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.3. This is due to missing or incorrect nonce validation on the OPH_options function. This makes it possible for unauthenticated attackers to update the plugin's configuration settings without authorization via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Explanation of Vulnerability in Simple Terms
Old Posts Highlighter versions 1.0.3 and earlier are vulnerable to cross-site request forgery (CSRF). An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions on the site without the administrator's knowledge or consent. The vulnerability requires the victim to visit the attacker's page while authenticated.
What an attacker can do
Perform unwanted actions on the site by tricking an authenticated admin into visiting a malicious webpage.
Potential impact on your site
An attacker can modify site settings or content through a logged-in admin's browser without the admin's awareness.
Conditions required to exploit
Site admin must be logged in and visit an attacker-controlled page; no special privileges or direct access required.
Key dates
External resources
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