CVE-2021-24221

8.8 highEPSS 1.9%

High (8.8) in expresstech quiz and survey master. EPSS 1.9% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

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

EPSS: 1.9% chance of exploitation in the next 30 days; higher than 79% of CVEs (scores of 2026-10-31)
CWE: CWE-89
Published: 2021-04-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

expresstech:quiz_and_survey_master

References

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