Lana Text to Image <= 1.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Strategic Overview
- Status
- Patched in 1.1.0
- Affected Plugin
- Lana Text to Image
- Affected Version
<= 1.0.0- CVSS
- 6.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2023-3387
At a glance
CVE-2023-3387 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Lana Text to Image WordPress plugin, affecting versions <= 1.0.0. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 1.1.0; sites on affected versions should update now. Disclosed June 2023, reported by István Márton.
Vulnerability Overview
The Lana Text to Image plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'lana_text_to_image' and 'lana_text_to_img' shortcode in versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Lana Text to Image <= 1.0.0 carries this weakness at lana_text_to_image, and reaching it takes an account at Contributor level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Lana Text to Image the fix is 1.1.0: builds <= 1.0.0 are affected, anything from 1.1.0 onward is not.
Remediation
Update to version 1.1.0, or a newer patched version
How does WordSec protect against this?
An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Lana Text to Image 1.1.0 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C