hyperframes-cli
Verdict safe, but 6 findings (5 medium, 1 info), mainly data exfiltration, policy violation. Most recent scan 2026-10-22.
Second scanner: NVIDIA SkillSpector
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
The HyperFrames CLI by job - scaffold, check, look at frames, edit the timeline, preview, render locally or in the cloud, publish, project history - plus reading its JSON and recovering from build or render failures.
- Package
- 13 files, 120 KB
- SKILL.md
- 1026 words, 8 sections
- Code
- None. Instructions only.
SKILL.md covers: HyperFrames CLI · Commands by job · The loop · Edit the timeline · Project history · Render where · When a command fails · References
Findings
MEDIUM Bash: tainted data flows to dangerous sink Data Exfiltrationbehavioral
Variable $TL (line 1) flows to `nc` at line 4.
references/upgrade-info-misc.md:61
node -e 'const t=12.5,j=JSON.parse(require("fs").readFileSync(0,"utf8"));j.timeline.tracks.forEach(tr=>tr.rows.forEach(x=>{if(x.absStart<=t&&x.absEnd>t)console.log(x.id,x.file)}))' <<<"$TL"MEDIUM Bash: tainted data flows to dangerous sink Data Exfiltrationbehavioral
Variable $TL (line 1) flows to `nc` at line 7.
references/upgrade-info-misc.md:64
node -e 'const q="tsfx-pet2",j=JSON.parse(require("fs").readFileSync(0,"utf8"));j.timeline.tracks.forEach(tr=>tr.rows.forEach(x=>{if(x.id===q||x.src===q)console.log(x.file,x.trackKind,x.absStart,x.absEnd)}))' <<<"$TL"MEDIUM Bash: tainted data flows to dangerous sink Data Exfiltrationbehavioral
Variable $TL (line 1) flows to `nc` at line 10.
references/upgrade-info-misc.md:67
node -e 'const k="video",j=JSON.parse(require("fs").readFileSync(0,"utf8"));j.timeline.tracks.find(t=>t.kind===k).rows.forEach(r=>console.log(r.id,r.absStart,r.absEnd))' <<<"$TL"MEDIUM Bash: tainted data flows to dangerous sink Data Exfiltrationbehavioral
Variable $TL (line 1) flows to `nc` at line 13.
references/upgrade-info-misc.md:70
node -e 'const k="video",j=JSON.parse(require("fs").readFileSync(0,"utf8"));const r=j.timeline.tracks.find(t=>t.kind===k).rows;for(let i=0;i<r.length-1;i++)console.log(r[i].id,r[i+1].id,r[i+1].absStart-r[i].absEnd)' <<<"$TL"MEDIUM Bash: tainted data flows to dangerous sink Data Exfiltrationbehavioral
Variable $TL (line 1) flows to `nc` at line 16.
references/upgrade-info-misc.md:73
node -e 'const k="video",n=2,j=JSON.parse(require("fs").readFileSync(0,"utf8"));const r=j.timeline.tracks.find(t=>t.kind===k).rows[n-1];console.log(r.index,r.id,r.absStart,r.file)' <<<"$TL"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
What is in the package
| File | Kind | Size |
|---|---|---|
SKILL.md | doc | 7.0 KB |
references/beats.md | doc | 802 B |
references/cloud.md | doc | 11 KB |
references/cloudrun.md | doc | 3.5 KB |
references/compare-and-batch.md | doc | 4.3 KB |
references/conventions.md | doc | 2.0 KB |
references/doctor-browser.md | doc | 4.3 KB |
references/feedback.md | doc | 2.5 KB |
references/init-and-scaffold.md | doc | 6.2 KB |
references/lambda.md | doc | 16 KB |
references/lint-validate-inspect.md | doc | 17 KB |
references/preview-render.md | doc | 32 KB |
references/upgrade-info-misc.md | doc | 13 KB |
External hosts referenced
api.heygen.com ffmpeg.org github.com linear.app stripe.com
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.
Environment variables referenced
HEYGEN_API_KEY HYPERFRAMES_CLIENT AWS_PROFILE AWS_REGION HEYGEN_ACCESS_TOKEN HEYGEN_API_URL HYPERFRAMES_API_KEY HYPERFRAMES_RUN_ID
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-skills-hyperframes-cli-scan.json
- Badge for your README:
- Request a re-scan