What is CVE-2023-6166?

CVE-2023-6166 is a medium-severity vulnerability in Ays-Pro Quiz Maker, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-12-26.

How severe is CVE-2023-6166?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2023-6166 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Ays-Pro Quiz Maker

CVE-2023-6166

The Quiz Maker WordPress plugin before 6.4.9.5 does not escape generated URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-12-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (33.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Ays-Pro Quiz Maker
Quiz Maker — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/e6155d9b-f6bb-4607-ad64-1976a8afe907 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-6166?: CVE-2023-6166 is a medium-severity vulnerability in Ays-Pro Quiz Maker, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-12-26.
How severe is CVE-2023-6166?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-6166 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.