CVE-2017-20262 Webkul CVE debrief

Who should care

Administrators and security teams of Joomla! installations using the Ajax Quiz component version 1.8 should prioritize patching this vulnerability. The high CVSS score of 8.8 indicates a significant risk, as unauthenticated attackers can exploit this vulnerability to extract sensitive database information.

Technical summary

CVE-2017-20262 is an SQL injection vulnerability in Joomla! Component Ajax Quiz 1.8. The vulnerability allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the cid parameter in GET requests to index.php with option=com_ajaxquiz and view=ajaxquiz parameters. This enables the extraction of sensitive database information, including table names and column structures. The CVSS vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

High priority due to CVSS score of 8.8 and potential for sensitive data extraction

Recommended defensive actions

• Apply official patches or updates for Joomla! Component Ajax Quiz 1.8
• Review and limit incoming GET requests to index.php with option=com_ajaxquiz and view=ajaxquiz parameters
• Monitor for suspicious database queries and unusual activity
• Inventory Joomla! installations and Ajax Quiz component versions
• Review and adjust web application firewall (WAF) rules to detect and prevent SQL injection attempts

Evidence notes

The CVE-2017-20262 record was published on June 19, 2026. The vulnerability affects Joomla! Component Ajax Quiz version 1.8. Primary evidence includes the CVE record and references to the vulnerability in various sources. Defenders should verify the affected product version and scope from official sources.

Official resources