Vulnerability record · CVE-2017-20257 · published 19 June 2026

CVE-2017-20257: Joomplace quiz deluxe sql injection vulnerability

Joomplace · Quiz Deluxe

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.

8.8 CVSS 4.0 High EPSS 0.49% · top 60.2% CWE-89 · SQL injection

8.8CVSS 4.0 base score

0.49%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References, 1 tagged exploit

19 Aug 2026Last modified by NVD

Description

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Quiz Deluxe Joomplace

References

Link	Tags
http://joomplace.com/	Product
https://extensions.joomla.org/extensions/extension/living/education-a-culture/quiz-deluxe/	Product
https://www.exploit-db.com/exploits/42589	ExploitVDB Entry
https://www.vulncheck.com/advisories/joomla-component-quiz-deluxe-sql-injection	Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-20257), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.