How severe is CVE-2017-20257?

CVE-2017-20257 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2017-20257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2017-20257?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2017-20257 have an EU (EUVD) identifier?

Yes. CVE-2017-20257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18984.

When was CVE-2017-20257 published?

CVE-2017-20257 was published on 2026-06-19 and last updated on 2026-06-22.

CVE-2017-20257

CVE-2017-20257 is a high-severity vulnerability with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v4: 8.8
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2017-18984
Weakness: CWE-89
Published: 2026-06-19
Last modified: 2026-06-22

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-20257?: CVE-2017-20257 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2017-20257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2017-20257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2017-20257 have an EU (EUVD) identifier?: Yes. CVE-2017-20257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18984.
When was CVE-2017-20257 published?: CVE-2017-20257 was published on 2026-06-19 and last updated on 2026-06-22.

References

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