CVE-2017-20257Public exploitNetwork attack vector

Unauthenticated SQL execution via quiz flag parameters

Published Jun 19, 2026 · Updated Jun 19, 2026

SQL injection in JoomPlace Joomla Quiz Deluxe 3.7.4 allows remote attackers to execute arbitrary SQL through a public quiz endpoint. The ajaxaction.flag_question task incorporates the stu_quiz_id or flag_quest parameter into database queries without neutralizing SQL syntax. No authentication is required, and successful exploitation permits database reads and limited data modification rather than service interruption.

CVSS severity8.8
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in JoomPlace Joomla Quiz Deluxe 3.7.4 allows remote attackers to execute arbitrary SQL through a public quiz endpoint. The ajaxaction.flag_question task incorporates the stu_quiz_id or flag_quest parameter into database queries without neutralizing SQL syntax. No authentication is required, and successful exploitation permits database reads and limited data modification rather than service interruption.

The record

CVE
CVE-2017-20257
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
JoomPlace
Product
Joomla Quiz Deluxe
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.7.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JoomPlace · Joomla Quiz Deluxeversion=3.7.4

Published CVSS scores

8.2VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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