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CVE-2026-3884

21
FAUCET Score

CVE-2026-3884 identifies a Cross-site Scripting (XSS) vulnerability in versions of the spin.js package prior to 3.0.0. Rated Medium (CVSS 6.1), this vulnerability requires an attacker to first achieve prototype pollution through a crafted URL before executing arbitrary JavaScript in the user's browser. The attack vector is network-based and necessitates user interaction, potentially impacting confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.0CPE matchmatch criteria
cpe:2.3:a:spin.js:spin.js:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 4.0

2.0LOW

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.16%
Probability of exploitation in next 30 days
EPSS Percentile
5.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 4th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gist.github.com / ericcornelissen/1a73e28fa50c3009b0eb51ad2fc19f25
Broken Link
security.snyk.io / vuln/SNYK-JS-SPINJS-15445079
Third Party Advisory