XSS in Cotonti Siena
CVE-2021-47808
Cotonti Siena 0.9.19 contains a stored cross-site scripting vulnerability in the admin configuration panel's site title parameter. Attackers can inject malicious JavaScript code through the 'maintitle' parameter to execute scripts when administrators view the page.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (15.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Cotonti Cotonti_siena — versions 0.9.19
- Cotonti.com Cotonti Siena — versions 0.9.19
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, exploit)
- disclosure@vulncheck.com (product, Broken Link)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47808?
- CVE-2021-47808 is a medium-severity vulnerability in Cotonti Siena, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-16.
- How severe is CVE-2021-47808?
- Medium severity. CVSS v3 base score is 5.4 out of 10.