How severe is CVE-2021-24691?

CVE-2021-24691 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24691 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24691?

CVE-2021-24691 affects Expresstech Quiz And Survey Master. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24691?

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

When was CVE-2021-24691 published?

CVE-2021-24691 was published on 2021-10-11 and last updated on 2026-06-17.

CVE-2021-24691

CVE-2021-24691 is a medium-severity vulnerability in Expresstech Quiz And Survey Master with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Expresstech Quiz And Survey Master
Published: 2021-10-11
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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
How severe is CVE-2021-24691?: CVE-2021-24691 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24691 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24691?: CVE-2021-24691 affects Expresstech Quiz And Survey Master. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24691 published?: CVE-2021-24691 was published on 2021-10-11 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/ecf6a082-b563-42c4-9d8c-3757aa6b696f

Affected products (1)

cpe:2.3:a:expresstech:quiz_and_survey_master:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Expresstech Quiz And Survey Master

CVE-2020-35949 — Critical (CVSS 10.0): An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It made it possible for…
CVE-2024-3592 — Critical (CVSS 9.9): The Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress plugin for WordPress is vulnerable to…
CVE-2020-35951 — Critical (CVSS 9.9): An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It allows users to delete…
CVE-2024-5606 — High (CVSS 8.8): The Quiz and Survey Master (QSM) WordPress plugin before 9.0.2 is vulnerable does not validate and escape the…
CVE-2022-0180 — High (CVSS 8.8): Cross-site request forgery (CSRF) vulnerability in Quiz And Survey Master versions prior to 7.3.7 allows a remote…
CVE-2021-24221 — High (CVSS 8.8): The Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress plugin before 7.1.12 did not sanitise…

All CVEs affecting Expresstech Quiz And Survey Master →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →