CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The kallyas theme for WordPress is vulnerable to Stored Cross-Site Scripting via several of the plugin's shortcodes in all versions up to, and including, 4.23.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
The KALLYAS WordPress theme contains a stored cross-site scripting (XSS) vulnerability affecting versions up to 4.23.0. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, including administrators. The vulnerability has scope impact, meaning it can affect users and functionality beyond the vulnerable component itself.
What an attacker can do
Inject malicious scripts that run in other users' browsers, potentially stealing session tokens or performing actions as those users.
Potential impact on your site
Authenticated users can inject persistent malicious code affecting all site visitors, including admins. Attackers could steal credentials or deface content.
Conditions required to exploit
Attacker must have a low-privilege WordPress account (e.g., subscriber or contributor role).
Key dates
External resources
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