Vulnerability · Published Jan 15, 2026 · Assigned by VulnCheck
CVE-2021-47808Cotonti Siena 0.9.19 - 'maintitle' Stored Cross-Site Scripting
Medium 5.4
In plain English
A medium-severity cross-site scripting in Cotonti Siena from cotonti.com. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 80.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| cotonti.com | Cotonti Siena | 0.9.19 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
References
- ExploitDB-50016 exploit
- Vendor Homepage product
- Software Download product
- VulnCheck Advisory: Cotonti Siena 0.9.19 - 'maintitle' Stored Cross-Site Scripting third-party-advisory