CVE-2026-3884

2.0 lowEPSS 0.2%

Low (2.0) in spin.js spin.js. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

2.0 low

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-03-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

spin.js:spin.js

References

https://gist.github.com/ericcornelissen/1a73e28fa50c3009b0eb51ad2fc19f25
https://security.snyk.io/vuln/SNYK-JS-SPINJS-15445079

Check your stack JSON