spin.js up to 2.x URL target cross site scripting

Summaryinfo

A vulnerability was found in spin.js up to 2.x. It has been classified as problematic. Affected is an unknown function of the component URL Handler. The manipulation of the argument target leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-3884. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in spin.js up to 2.x. This issue affects an unknown code block of the component URL Handler. The manipulation of the argument target with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at security.snyk.io. The identification of this vulnerability is CVE-2026-3884 since 03/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 302200 (Linux Distros Unpatched Vulnerability : CVE-2026-3884), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.0.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (302200). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• JavaScript Library

Name

• spin.js

Version

• 2.x

CPE 2.3info

• 🔒

CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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