CVE-2026-3955
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 · uneditedA security vulnerability has been detected in elecV2P up to 3.8.3. Affected by this issue is the function runJSFile of the file source-code/elecV2P-master/webser/wbjs.js of the component jsfile Endpoint. Such manipulation leads to code injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
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 confidenceA code injection vulnerability exists in elecV2P up to v3.8.3 in the runJSFile function within wbjs.js. The jsfile endpoint fails to properly sanitize input, allowing remote attackers to inject and execute arbitrary code by manipulating the file processing logic.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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 if elecV2P is installed and runningCheck for running elecV2P processes or installed directories. Common locations include /opt/elecV2P, ~/elecV2P, or check process list for elecV2P entries.Affected if elecV2P process or installation directory exists on the system
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Determine the installed version of elecV2PCheck the version file or examine the package.json in the elecV2P installation directory. Look for a version file or run: node -e "console.log(require('./package.json').version)" from the install directory.Affected if Installed version is v3.8.3 or earlier, or if the version cannot be determined and the product is present
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Verify the jsfile endpoint is exposedCheck if the /jsfile endpoint is accessible on the web interface. This can be confirmed by reviewing the web server configuration files in the elecV2P directory, or by attempting to access http://<host>:<port>/jsfile (where port is typically 8000 or 12580).Affected if The jsfile endpoint responds to requests or is defined in the route configuration files
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Confirm network exposure of the web interfaceReview the web interface binding configuration. Check if the service listens on 0.0.0.0 or a publicly accessible IP address rather than localhost only. Look for 'host' or 'listen' settings in the config files or startup parameters.Affected if elecV2P web interface is bound to 0.0.0.0 or exposed to non-localhost network interfaces, allowing remote access
A system is affected if elecV2P is installed with version v3.8.3 or earlier, the jsfile endpoint is accessible, and the service is network-reachable beyond localhost.
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 strict input validation and sanitization on the jsfile endpoint, particularly for file paths and content passed to runJSFile. Consider applying context-aware output encoding and restrict the service network exposure until a vendor patch is available.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-3955 — 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-2026-3955 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
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- Version or environment caveats, and links to real fixes
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