CVE-2026-62327
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · unedited9Router through version 0.4.41 contains an unauthenticated information disclosure vulnerability that allows remote attackers to retrieve plaintext API keys for all connected AI provider accounts by sending a single unauthenticated request to the /api/usage/stats endpoint. Attackers can exploit the missing authentication middleware on the Next.js API route to obtain full API key strings alongside token counts, cost breakdowns, and request metadata, enabling unauthorized use of connected AI provider accounts, billing fraud, and quota exhaustion.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidence9Router versions up to 0.4.41 expose an unauthenticated API endpoint at /api/usage/stats that returns plaintext API keys for all connected AI provider accounts alongside usage statistics. The vulnerability stems from missing authentication middleware on a Next.js API route, allowing any remote attacker to retrieve full API key strings, token counts, cost breakdowns, and request metadata without credentials.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify 9Router versionLocate the installed 9Router version number in the application configuration, package metadata, or software inventory. Common locations include package.json, a version command output, or the application's about/settings page.Affected if The installed version is 0.4.41 or lower (any version up to and including 0.4.41 is vulnerable).
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Verify /api/usage/stats endpoint existsSend an HTTP GET request to http(s)://<your-9router-host>/api/usage/stats without providing any authentication headers, tokens, or credentials.Affected if The endpoint responds with an HTTP 200 status and returns data, indicating it lacks authentication protection.
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Inspect response for exposed credentialsExamine the JSON response from the /api/usage/stats endpoint. Look for fields containing plaintext strings that appear to be API keys (typically long alphanumeric strings, often prefixed with 'sk-' or similar provider identifiers).Affected if The response contains plaintext API keys for connected AI providers, token counts, cost breakdowns, or other usage metadata.
You are affected if 9Router version is 0.4.41 or lower AND the /api/usage/stats endpoint responds to unauthenticated requests with plaintext API keys and usage data.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement robust authentication middleware on the /api/usage/stats endpoint and all sensitive API routes to verify user identity before returning any data. Additionally, audit other endpoints for similar authentication bypasses and consider rotating potentially compromised API keys.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-62327 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-62327 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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