CVE-2024-9375: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in contact-banker WordPress Captcha Plugin by Captcha Bank
The WordPress Captcha Plugin by Captcha Bank plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 4.0.36. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
AI Analysis
Technical Summary
CVE-2024-9375 is a reflected Cross-Site Scripting vulnerability in the WordPress Captcha Plugin by Captcha Bank affecting all versions up to 4.0.36. The issue arises from the use of add_query_arg without proper escaping of URL parameters, enabling attackers to inject malicious scripts into web pages. This vulnerability requires user interaction (clicking a crafted link) and can lead to limited confidentiality and integrity impacts. The CVSS 3.1 base score is 6.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N). No vendor advisory or patch is currently available, and no known exploits have been reported.
Potential Impact
Successful exploitation can lead to execution of arbitrary scripts in the context of the vulnerable website, potentially allowing attackers to steal user credentials, perform actions on behalf of users, or manipulate site content. The impact is limited to confidentiality and integrity with no availability impact. The vulnerability requires user interaction and is exploitable remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or replacing the vulnerable plugin or implementing web application firewall (WAF) rules to detect and block malicious input targeting this vulnerability. Avoid clicking on suspicious links that may exploit this issue.
CVE-2024-9375: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in contact-banker WordPress Captcha Plugin by Captcha Bank
Description
The WordPress Captcha Plugin by Captcha Bank plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 4.0.36. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-9375 is a reflected Cross-Site Scripting vulnerability in the WordPress Captcha Plugin by Captcha Bank affecting all versions up to 4.0.36. The issue arises from the use of add_query_arg without proper escaping of URL parameters, enabling attackers to inject malicious scripts into web pages. This vulnerability requires user interaction (clicking a crafted link) and can lead to limited confidentiality and integrity impacts. The CVSS 3.1 base score is 6.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N). No vendor advisory or patch is currently available, and no known exploits have been reported.
Potential Impact
Successful exploitation can lead to execution of arbitrary scripts in the context of the vulnerable website, potentially allowing attackers to steal user credentials, perform actions on behalf of users, or manipulate site content. The impact is limited to confidentiality and integrity with no availability impact. The vulnerability requires user interaction and is exploitable remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or replacing the vulnerable plugin or implementing web application firewall (WAF) rules to detect and block malicious input targeting this vulnerability. Avoid clicking on suspicious links that may exploit this issue.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-09-30T20:45:59.164Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6b4bb7ef31ef0b550fe4
Added to database: 2/25/2026, 9:36:11 PM
Last enriched: 4/9/2026, 8:40:59 AM
Last updated: 4/12/2026, 2:05:44 AM
Views: 16
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