CVE-2021-47808

MEDIUM
2026-01-16 [email protected]
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 02, 2026 - 16:16 vuln.today
Public exploit code
CVE Published
Jan 16, 2026 - 00:16 nvd
MEDIUM 5.4

Tags

XSS Cotonti Siena

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.

Analysis

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. [CVSS 5.4 MEDIUM]

Technical Context

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Cotonti Siena. 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

Vendor: Cotonti. Product: Cotonti Siena. Versions: up to 0.9.19.

Remediation

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: +20

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CVE-2021-47808 vulnerability details – vuln.today
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