Cross-site Scripting (XSS) Vulnerability in WP-Ajax-Recent-Posts

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Advisory ID:	HTB22951
Product:	WP-Ajax-Recent-Posts
Vendor:	QiQiBoY
Vulnerable Versions:	1.0.1 and probably prior
Tested Version:	1.0.1
Advisory Publication:	April 12, 2011 [without technical details]
Vendor Notification:	April 12, 2011
Public Disclosure:	April 26, 2011
Vulnerability Type:	Cross-Site Scripting [CWE-79]
Risk Level:	Medium

CVSSv2 Base Score:	4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Discovered and Provided:	High-Tech Bridge Security Research Lab
Advisory Details:
High-Tech Bridge SA Security Research Lab has discovered vulnerability in WP-Ajax-Recent-Posts which could be exploited to perform cross-site scripting attacks. 1) Cross-site scripting (XSS) vulnerability in WP-Ajax-Recent-Posts The vulnerability exists due to input sanitation error in the "number" parameter in function.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website. Exploitation example: http://[host]/?action=wpAjaxRecentPosts&number=1%27%29%22%3E%3Cscript%3Ealer t%28123%29;%3C/script%3E
How to Detect Cross-Site Scripting Vulnerabilities Website Security Test GDPR & PCI DSS Test Website CMS Security Test CSP & HTTP Headers Check WordPress & Drupal Scanning Try For Free Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.

References:
[1] High-Tech Bridge Advisory HTB22951 - https://www.immuniweb.com/advisory/HTB22951 - Cross-site Scripting (XSS) Vulnerability in WP-Ajax-Recent-Posts [2] WP-Ajax-Recent-Posts - qiqiboy.com - WP Ajax Recent Posts is a WordPress plugin for displaying recent pictures. [3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

Previous Security Advisories with CWE-79:

HTB22947: Multiple Vulnerabilities in Ajax Category Dropdown

HTB22945: Multiple Vulnerabilities in ZENphoto

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