← Vulnerability feed

Vulnerability record · CVE-2023-0291 · published 9 June 2023

CVE-2023-0291: Expresstech quiz and survey master missing authorization vulnerability

Expresstech · Quiz And Survey Master

The Quiz And Survey Master for WordPress is vulnerable to authorization bypass due to a missing capability check on the function associated with the qsm_remove_file_fd_question AJAX action in versions up to, and including, 8.0.8. This makes it possible for unauthenticated attackers to delete arbitrary media files.

9.1 CVSS 3.1 Critical EPSS 2.0% · top 19.7% CWE-862 · Missing authorization
9.1CVSS 3.1 base score
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

The Quiz And Survey Master for WordPress is vulnerable to authorization bypass due to a missing capability check on the function associated with the qsm_remove_file_fd_question AJAX action in versions up to, and including, 8.0.8. This makes it possible for unauthenticated attackers to delete arbitrary media files.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://packetstormsecurity.com/files/171011/wpqsm808-xsrf.txt Not ApplicableVDB Entry
https://plugins.trac.wordpress.org/changeset/2834471/quiz-master-next Patch
https://wordpress.org/plugins/quiz-master-next/ Product
https://www.wordfence.com/threat-intel/vulnerabilities/id/68110321-db1a-4634-98cd-0afd3ec933b8?source=cve Third Party Advisory
https://packetstormsecurity.com/files/171011/wpqsm808-xsrf.txt Not ApplicableVDB Entry
https://plugins.trac.wordpress.org/changeset/2834471/quiz-master-next Patch
https://wordpress.org/plugins/quiz-master-next/ Product
https://www.wordfence.com/threat-intel/vulnerabilities/id/68110321-db1a-4634-98cd-0afd3ec933b8?source=cve Third Party Advisory

Track CVE-2023-0291 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2020-35951Quiz and Survey Master plugin unauthenticated arbitrary file deletionThe WordPress plugin Quiz and Survey Master before 7.0.1 exposes the qsm_remove_file_fd_question function without authentication, letting anyone dele…EPSS 76%analysed9.8CVE-2022-41652Expresstech quiz and survey master improper access control vulnerabilityBypass vulnerability in Quiz And Survey Master plugin <= 7.3.10 on WordPress.EPSS 0.75%9.8CVE-2020-35949Expresstech quiz and survey master unrestricted file upload vulnerabilityAn issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It made it possible for unauthenticated attackers to upload …EPSS 5.1%8.8CVE-2024-5606Expresstech quiz and survey master sql injection vulnerabilityThe Quiz and Survey Master (QSM) WordPress plugin before 9.0.2 is vulnerable does not validate and escape the question_id parameter in the qsm_bulk_d…EPSS 0.59%8.8CVE-2023-26524Expresstech quiz and survey master cross-site request forgery vulnerabilityCross-Site Request Forgery (CSRF) vulnerability in ExpressTech Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress plugin <= 8.0…EPSS 0.31%8.8CVE-2022-46862Expresstech quiz and survey master cross-site request forgery vulnerabilityCross-Site Request Forgery (CSRF) vulnerability in ExpressTech Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress plugin <= 8.0…EPSS 0.38%8.8CVE-2021-36906Expresstech quiz and survey master insecure direct object reference vulnerabilityMultiple Insecure Direct Object References (IDOR) vulnerabilities in ExpressTech Quiz And Survey Master plugin <= 7.3.6 on WordPress.EPSS 0.58%8.8CVE-2022-0180Expresstech quiz and survey master cross-site request forgery vulnerabilityCross-site request forgery (CSRF) vulnerability in Quiz And Survey Master versions prior to 7.3.7 allows a remote attacker to hijack the authenticati…EPSS 0.65%

Source: NIST National Vulnerability Database (record CVE-2023-0291), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.