XSS in Expresstech Quiz And Survey Master

CVE-2021-24691

The Quiz And Survey Master WordPress plugin before 7.3.2 does not escape the Quiz Url Slug setting before outputting it in some pages, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-24691: held from 0.006 to 0.006.

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

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-24691?
CVE-2021-24691 is a medium-severity vulnerability in Expresstech Quiz And Survey Master, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-10-11.
How severe is CVE-2021-24691?
Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-24691 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.