CVE-2017-20257

Joomla! Component Quiz Deluxe 3.7.4 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL commands through the ajaxaction.flag_question task. Attackers can inject malicious SQL code via the stu_quiz_id or flag_quest parameters to manipulate database queries and extract sensitive information.

Score

CVSS 4.0 8.8 High

Status

Analyzed - disclosure@vulncheck.com

Published

2026-06-19

Last modified

2026-10-01

Weaknesses

CWE-89

Affected products

• Quiz Deluxe (Joomplace)

References

• http://joomplace.com/
• https://extensions.joomla.org/extensions/extension/living/education-a-culture/quiz-deluxe/
• https://www.exploit-db.com/exploits/42589
• https://www.vulncheck.com/advisories/joomla-component-quiz-deluxe-sql-injection