Versioned security assessment

Report ID: SA-81E05E63

8/4/2026, 3:59:47 PM

nextjs-supabase-auth security assessment v6

Skill Security Certification Report

Audit History
Scanner version 3.0.0 Audit model: codex Latest published report
Skill name
nextjs-supabase-auth
Version
v6
Maintainer
sickn33
Source
github.com/sickn33/antigravity-awesome-skills/tree/main/skills/nextjs-supabase-auth
Coverage
1 Files scanned · 314 Lines analyzed
Policy version
skillstore-security-audit-policy-v1

Highest confirmed finding severity

High

1 confirmed security finding requires attention.

Installation context

Check the current Skill page

This page summarizes report evidence only. The Skill page provides the canonical install advisory.

Open current Skill page

This report does not block or authorize the manifest or ZIP.

The command-execution alerts are false positives caused by JavaScript template literals, Markdown fences, and inline Markdown. Public Supabase environment variables are expected, but the OAuth callback contains a high-severity open redirect through its unvalidated next parameter.

Report position

Latest published report

Latest refers to the report sequence, not to artifact currentness.

Audit attestation

Active attestation

A public attestation is available for this exact report.

Human verification

Not verified

No human verification is recorded for this report.

Coverage

1 Files scanned · 314 Lines analyzed

1 item shown for review

Limitations

This report does not claim runtime or sandbox execution and does not prove the absence of side effects.

Evidence chain

Follow the evidence from source binding to the install contract. Available evidence supports verification; it is not a safety guarantee.

  1. Source

    Commit and path bound

  2. Artifact

    Content and tree hashes bound

  3. Audit

    Complete

  4. Install contract

    Open manifest to verify

    Open manifest

Capabilities observed

Observed means this report recorded supporting evidence. Not recorded does not prove that a capability is absent.

Contains scripts

May execute code included with the Skill.

Not recorded by this audit

Network access

May connect to external services.

Not recorded by this audit

Filesystem access

May read or write local files.

Not recorded by this audit

Env variables

May read values from the process environment.

Observed in 7 evidence locations

External commands

May invoke commands or programs outside the Skill.

Observed in 7 evidence locations

Risk findings

Confirmed security concerns are separated from items that still need review.

Confirmed security concerns (1)

RISK-001 High
SKILL.md:123-131
Unvalidated OAuth Callback Redirect
The callback concatenates the user-controlled next query value with the site origin. Crafted values can produce an external redirect after authentication and support phishing.
The next value comes directly from URL search parameters and reaches NextResponse.redirect without validation. The data flow is explicit in the example.

Remediation

Suggested fixes recorded by this audit. Applying them is the maintainer’s responsibility.

  1. FIX-001
    High
    The OAuth callback redirects with an unvalidated next query parameter.
    Allow only local paths beginning with one slash, reject protocol-relative or malformed values, and construct the redirect with a validated URL.

Expert evidence

Immutable subject identity, scanner metadata, dismissed matches, and source-level evidence.

Artifact subject

Marketplace commit
81e05e636292629114b76cbb3922fbe57672fc02
Content hash
82bbd17e1a3179f86172a438c6ef4b7b69e653cb2af1532c6fbaf957ff7b3edf
Tree hash
438ab93f4625be61c869ace76696e5907b795893f3b8bb48ebfd9f8618a7c8b8
Skill path
skills/sickn33/nextjs-supabase-auth
Audit payload hash
97a804d5871edb0d46a75a84b52271ae

Analysis metadata

Audit model: codex

Analysis state: Complete

Scope is limited to the recorded files, lines, methods, and evidence. No runtime or sandbox execution is claimed.

Verify and export

JSON report Signed attestation CITATION.cff SARIF 2.1.0 Signed installation manifest Source

The manifest and lockfile bind install artifacts to cryptographic hashes. This integrity claim is separate from the security assessment.

Audit attestation: active