CVE-2026-3884

MEDIUM
2026-03-11 [email protected]
6.1
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:06 vuln.today
CVE Published
Mar 11, 2026 - 06:17 nvd
MEDIUM 6.1

Tags

XSS

Description

Versions of the package spin.js before 3.0.0 are vulnerable to Cross-site Scripting (XSS) via the spin() function that allows a creation of more than 1 alert for each 'target' element. An attacker would need to set an arbitrary key-value pair on Object.prototype through a crafted URL achieving a prototype pollution first, before being able to execute arbitrary JavaScript in the context of the user's browser.

Analysis

Spin.js versions before 3.0.0 allow attackers to execute arbitrary JavaScript through a combination of prototype pollution and XSS in the spin() function, requiring user interaction via a crafted URL. An attacker can exploit this to manipulate Object.prototype and trigger malicious code execution in affected users' browsers. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

31
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +30
POC: 0

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CVE-2026-3884 vulnerability details – vuln.today
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