CVE-2026-9645
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 · uneditedExposed methods allow authenticated users to create and execute arbitrary JavaScript code on the server. The scripts execute with full access, enabling complete system compromise as commands are executed as root.
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 · moderate confidenceAn API or method in the application exposes script execution functionality to authenticated users, allowing them to create and run arbitrary JavaScript code on the server with root-level privileges, resulting in complete system compromise.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 1.2CVSS 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
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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 exposed scripting API endpointsReview your application API documentation and configuration for any endpoints related to scripting, JavaScript execution, code evaluation, or dynamic script execution. Search for keywords like 'eval', 'execute', 'script', 'run', 'js', 'javascript' in your API route definitions.Affected if Any API endpoint exists that accepts and executes arbitrary JavaScript code without proper sanitization.
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Verify authentication requirements on scripting endpointsExamine the access control configuration for any identified scripting API methods. Confirm whether these endpoints require authentication and if the authorization logic properly validates user permissions before allowing code execution.Affected if Authenticated users can access endpoints that execute arbitrary JavaScript without additional authorization checks.
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Check JavaScript runtime privilege levelInspect the process configuration and runtime settings for your application's JavaScript engine or scripting runtime. Determine whether it runs with root/administrator privileges or is sandboxed with limited permissions.Affected if The JavaScript runtime executes with root or administrator-level system privileges.
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Audit API method access logsReview access logs for any API calls to scripting or code execution endpoints. Look for patterns of API invocations that indicate script creation or execution functionality was accessed.Affected if Logs show API calls to script execution endpoints were made, especially by lower-privilege authenticated users.
Your environment is affected if your product exposes API endpoints that allow authenticated users to execute arbitrary JavaScript code, particularly if the runtime operates with elevated (root/administrator) privileges.
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 dataImmediately restrict access to the exposed methods, implement proper authorization checks, disable the scripting functionality if not required, or apply vendor patches to prevent unauthenticated or unauthorized code execution.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-9645 — 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-2026-9645 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data