XSS in Slickquiz Project
CVE-2019-12517
An XSS issue was discovered in the slickquiz plugin through 1.3.7.1 for WordPress. The save_quiz_score functionality available via the /wp-admin/admin-ajax.php endpoint allows unauthenticated users to submit quiz solutions/answers, which are stored in the database and later shown in the WordPress backend for all users with at least Subscriber rights. Because the plugin does not properly validate and sanitize this data, a malicious payload in either the name or email field is executed directly within the backend at /wp-admin/admin.php?page=slickquiz across all users with the privileges of at least Subscriber.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.012 (69.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/plugins/slickquiz/ (Product)
- packetstormsecurity.com/files/154439/WordPress-SlickQuiz-1.3.7.1-Cross-Site-Scr… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-12517?
- CVE-2019-12517 is a medium-severity vulnerability in Slickquiz Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-09-13.
- How severe is CVE-2019-12517?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2019-12517 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.