CVE-2024-9421: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in prontotools Login Logout Shortcode
The Login Logout Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' parameter in all versions up to, and including, 1.1.0 due to insufficient input sanitization and output escaping. 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.
AI Analysis
Technical Summary
CVE-2024-9421 is a stored cross-site scripting vulnerability in the Login Logout Shortcode WordPress plugin by prontotools, affecting all versions up to and including 1.1.0. The vulnerability occurs due to improper neutralization of input in the 'class' parameter, allowing authenticated users with Contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute when any user accesses the injected page, potentially leading to session hijacking or other script-based attacks. The CVSS 3.1 base score is 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, requiring privileges, no user interaction, scope change, and limited confidentiality and integrity impact without availability impact.
Potential Impact
An attacker with Contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable 'class' parameter. These scripts execute in the context of users viewing the affected pages, potentially compromising user sessions or data confidentiality and integrity. The vulnerability does not impact availability. There are no known active exploits reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Contributor-level access to trusted users only and consider removing or disabling the Login Logout Shortcode plugin if possible. Monitor vendor channels for updates and apply any official patches promptly once available.
CVE-2024-9421: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in prontotools Login Logout Shortcode
Description
The Login Logout Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' parameter in all versions up to, and including, 1.1.0 due to insufficient input sanitization and output escaping. 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-9421 is a stored cross-site scripting vulnerability in the Login Logout Shortcode WordPress plugin by prontotools, affecting all versions up to and including 1.1.0. The vulnerability occurs due to improper neutralization of input in the 'class' parameter, allowing authenticated users with Contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute when any user accesses the injected page, potentially leading to session hijacking or other script-based attacks. The CVSS 3.1 base score is 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, requiring privileges, no user interaction, scope change, and limited confidentiality and integrity impact without availability impact.
Potential Impact
An attacker with Contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable 'class' parameter. These scripts execute in the context of users viewing the affected pages, potentially compromising user sessions or data confidentiality and integrity. The vulnerability does not impact availability. There are no known active exploits reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Contributor-level access to trusted users only and consider removing or disabling the Login Logout Shortcode plugin if possible. Monitor vendor channels for updates and apply any official patches promptly once available.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-10-01T20:06:27.896Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6b4bb7ef31ef0b551091
Added to database: 2/25/2026, 9:36:11 PM
Last enriched: 4/9/2026, 3:29:35 PM
Last updated: 4/12/2026, 7:58:20 AM
Views: 14
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