What is CVE-2026-3884?

CVE-2026-3884 is a medium-severity vulnerability in Spin.js, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-11.

How severe is CVE-2026-3884?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Spin.js

CVE-2026-3884

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 p…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (12.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Spin.js
N/a Spin.js — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

report@snyk.io (Third Party Advisory)
report@snyk.io (Broken Link)

Frequently asked questions

What is CVE-2026-3884?: CVE-2026-3884 is a medium-severity vulnerability in Spin.js, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-11.
How severe is CVE-2026-3884?: Medium severity. CVSS v3 base score is 6.1 out of 10.