cuboid-carousel

SAFE max severity MEDIUMSkillSpector Do not install 61 registry heygen-com last scanned 2026-10-22 1 scan

Verdict safe, but 7 findings (4 medium, 2 low, 1 info), mainly data exfiltration, unauthorized tool use, policy violation. Most recent scan 2026-10-22.

Findings7

Critical0

High0

Medium4

Low2

Analyzersstatic bytecode pipeline correlation behavioral trigger

Scanner version2.3.1

Second scanner: NVIDIA SkillSpector

VerdictDo not install 61

Score61 / 100

Issues10

Categoriesanalysis-evasion MCP Least Privilege MCP Rug Pull

Version2.12.0 (static)

The two scanners disagree: Cisco found nothing and SkillSpector says do not install. One of them has a blind spot here; read the skill before trusting either. How the two scanners compare across the whole corpus: Two scanners, one corpus.

What this skill does

A chain of bevelled cuboids rides a travelling wave as a content carousel. HyperFrames block, 1920×1080, 6.666666666666667s, 40 variables.

Package: 11 files, 1.8 MB
SKILL.md: 947 words, 6 sections
Code: JavaScript (6)

SKILL.md covers: Cuboid Carousel · Files · Install · Variables · Runtime contract · Editing rules (from the source project)

Findings

MEDIUM Outbound network request primitives in JavaScript/TypeScript Data Exfiltrationstatic

Pattern detected: fetch(

assets/three.core.min.js:13955

(fetch(n)

Remediation: Ensure network operations are necessary and document allowed destinations

MEDIUM Outbound network request primitives in JavaScript/TypeScript Data Exfiltrationstatic

Pattern detected: fetch(

assets/three.core.min.js:15734

"undefined" == typeof fetch && ai("ImageBitmapLoader: fetch() not supported."),

Remediation: Ensure network operations are necessary and document allowed destinations

MEDIUM Outbound network request primitives in JavaScript/TypeScript Data Exfiltrationstatic

Pattern detected: fetch(

assets/three.core.min.js:15767

const o = fetch(t, a)

Remediation: Ensure network operations are necessary and document allowed destinations

MEDIUM File extension does not match actual content type Obfuscationstatic

File 'three.module.min.js' extension (.js) suggests one format but Magika detected a different text format: TypeScript source (typescript). This may indicate content obfuscation or a misnamed file.

assets/three.module.min.js

Remediation: Rename the file to match its actual content type, or remove it if it appears malicious.

LOW Script contacts a destination the documentation never mentions Unauthorized Tool Usestatic

Script contacts or configures 'gsap.com' but the skill documentation never visibly mentions it. Undocumented network destinations can indicate behaviour the manifest and description do not disclose.

assets/gsap-3.14.2.min.js:2096

Remediation: Document the destination in SKILL.md (or the manifest description) if it is intended, or remove the undisclosed network access. Organizations can list internal hosts in llm_analysis.trusted_reference_domains.

LOW Script contacts a destination the documentation never mentions Unauthorized Tool Usestatic

Script contacts or configures 'jcgt.org' but the skill documentation never visibly mentions it. Undocumented network destinations can indicate behaviour the manifest and description do not disclose.

assets/three.module.min.js:1992

INFO Skill does not specify a license Policy Violationstatic

Skill manifest does not include a 'license' field. Specifying a license helps users understand usage terms.

SKILL.md

Remediation: Add 'license' field to SKILL.md frontmatter (e.g., MIT, Apache-2.0)

What is in the package

File	Kind	Size
`SKILL.md`	doc	7.0 KB
`cuboid-carousel.html`	data	38 KB
`registry-item.json`	config	2.3 KB
`assets/GSAP-NOTICE.txt`	doc	145 B
`assets/Three-LICENSE.txt`	doc	1.1 KB
`assets/cuboid-motion.js`	script	593 KB
`assets/gsap-3.14.2.min.js`	script	128 KB
`assets/three.core.min.js`	script	554 KB
`assets/three.module.min.js`	script	468 KB
`assets/addons/environments/RoomEnvironment.js`	script	4.8 KB
`assets/addons/utils/BufferGeometryUtils.js`	script	36 KB

External hosts referenced

gsap.com fonts.googleapis.com static.heygen.ai fonts.gstatic.com github.com hyperframes.heygen.com jcgt.org

Hostnames that appear in the skill's files. Referencing a host is not a finding; compare against the findings above and the skill's stated purpose.

Package contents recorded 2026-10-22 at commit 4371981b740d. The scan above ran against the version current at scan time; the two can differ if the skill has since been updated.

What we checked

Static analyzer. Pattern rules over SKILL.md and bundled files: known-bad commands, exfiltration URLs, secrets, obfuscation.
Bytecode analyzer.
Pipeline analyzer.
Correlation analyzer.
Behavioral analyzer. Checks what the skill asks the agent to do against what its description claims it does.
Trigger analyzer. Looks for instructions that fire on conditions the user did not ask for.

What we did not check

Runtime behaviour. The skill was not executed; findings come from reading its files.
Anything fetched at install or run time, including remote scripts, package dependencies, and URLs the skill tells the agent to open.
Content the analyzers cannot read: images, binaries, and some non-English text.
Known scanner bypass classes. See the methodology and limitations page.

Sources

Repository: https://github.com/heygen-com/hyperframes
Raw scan result: heygen-com-hyperframes-registry-blocks-cuboid-carousel-scan.json
Badge for your README: ![skillscan.io](https://skillscan.io/badge/heygen-com-cuboid-carousel.svg)
Request a re-scan

Second scanner: NVIDIA SkillSpector

What this skill does

Findings

What is in the package

External hosts referenced

What we checked

What we did not check

Sources

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