How severe is CVE-2023-51521?

CVE-2023-51521 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2023-51521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-51521?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-51521 have an EU (EUVD) identifier?

Yes. CVE-2023-51521 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56233.

When was CVE-2023-51521 published?

CVE-2023-51521 was published on 2024-03-16 and last updated on 2026-06-17.

CVE-2023-51521

CVE-2023-51521 is a medium-severity vulnerability with a CVSS 3.x base score of 5.4. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56233
Weakness: CWE-352
Published: 2024-03-16
Last modified: 2026-06-17

Description

Cross-Site Request Forgery (CSRF) vulnerability in ExpressTech Quiz And Survey Master.This issue affects Quiz And Survey Master: from n/a through 8.1.18.

Frequently asked questions

What is CVE-2023-51521?: Cross-Site Request Forgery (CSRF) vulnerability in ExpressTech Quiz And Survey Master.This issue affects Quiz And Survey Master: from n/a through 8.1.18.
How severe is CVE-2023-51521?: CVE-2023-51521 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2023-51521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-51521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-51521 have an EU (EUVD) identifier?: Yes. CVE-2023-51521 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56233.
When was CVE-2023-51521 published?: CVE-2023-51521 was published on 2024-03-16 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/quiz-master-next/wordpress-quiz-and-survey-master-plugin-8-1-18-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

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