SQL Injection in Joomplace Quiz Deluxe
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.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Joomplace Quiz Deluxe — versions 3.7.4
- Joomplace Quiz Deluxe — versions 3.7.4
Weakness classification (CWE)
References
- joomplace.com/ (Product, product)
- extensions.joomla.org/extensions/extension/living/education-a-culture/quiz-delu… (Product, product)
- www.exploit-db.com/exploits/42589 (Exploit, VDB Entry, exploit)
- www.vulncheck.com/advisories/joomla-component-quiz-deluxe-sql-injection (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2017-20257?
- CVE-2017-20257 is a high-severity vulnerability in Joomplace Quiz Deluxe, classified under SQL Injection. CVSS score: 8.2/10. Published 2026-06-19.
- How severe is CVE-2017-20257?
- High severity. CVSS v3 base score is 8.2 out of 10.