SQL Injection in Expresstech Quiz And Survey Master
CVE-2021-24221
The Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress plugin before 7.1.12 did not sanitise the result_id GET parameter on pages with the [qsm_result] shortcode without id attribute, concatenating it in a SQL statement and leading to an SQL injection. The lowest role allowed to use this shortcode in post or pages being author, such user could gain unauthorised access to the DBMS. If the shortcode (without the id attribute) is embed on a public page or post, then unauthenticated users could exploit the injection.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.019 (78.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Expresstech Quiz And Survey Master
- Quiz And Survey Master – Best Quiz, Exam Plugin For WordPress — versions 7.1.12
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/3b52b25c-82a1-41c7-83ac-92e244f7c5ab (Exploit, Third Party Advisory)
- plugins.trac.wordpress.org/changeset/2479603/ (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24221?
- CVE-2021-24221 is a high-severity vulnerability in Expresstech Quiz And Survey Master, classified under SQL Injection. CVSS score: 8.8/10. Published 2021-04-12.
- How severe is CVE-2021-24221?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-24221 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.