What is CVE-2022-42066?

CVE-2022-42066 is a medium-severity vulnerability in Projectworlds Online Examination System, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-10-14.

How severe is CVE-2022-42066?

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

XSS in Projectworlds Online Examination System

CVE-2022-42066

Online Examination System version 1.0 suffers from a cross site scripting vulnerability via index.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-10-14 · 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: 0.006 (47.4th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Projectworlds Online Examination System — versions 1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

packetstormsecurity.com/files/168549/Online-Examination-System-1.0-Cross-Site-S… (Exploit, VDB Entry, Third Party Advisory)
projectworlds.in/free-projects/php-projects/online-examination/ (Product)

Frequently asked questions

What is CVE-2022-42066?: CVE-2022-42066 is a medium-severity vulnerability in Projectworlds Online Examination System, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-10-14.
How severe is CVE-2022-42066?: Medium severity. CVSS v3 base score is 6.1 out of 10.