CVE-2026-11419
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 path traversal vulnerability exists in the Altium Enterprise Server Vault Service UploadController due to improper validation of a user-controlled path component in image upload requests. An authenticated user can supply a crafted absolute path so that the configured storage root is discarded, allowing arbitrary files to be written to any location on the server filesystem writable by the service account. Because content-controlled files can be written to web-accessible directories, or used to overwrite application binaries or configuration files, this can be escalated to remote code execution, service takeover, or denial of service. Altium 365 cloud deployments are not affected, as the affected endpoint is not reachable and the cloud storage architecture mitigates the file-write primitive.
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 confidenceA path traversal vulnerability in Altium Enterprise Server's Vault Service UploadController allows authenticated users to supply a crafted absolute path in image upload requests that bypasses the storage root validation, enabling arbitrary file writes to any location writable by the service account. This file write primitive can be escalated to remote code execution by writing web shells to accessible directories or overwriting application binaries and configuration files.
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< 8.1.1CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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 Altium Enterprise Server versionLocate and inspect the installed Altium On Prem Enterprise Server version - typically found in the application itself, installation directory, or system information panelAffected if The installed version is below 8.1.1 (any version < 8.1.1)
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Confirm Vault Service is enabledCheck whether the Vault Service component is installed and running on the Altium Enterprise Server - this is typically managed through the server's service management console or process listAffected if Vault Service is active and running on the server
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Verify UploadController endpoint is exposedCheck if the Vault Service UploadController endpoint is accessible on the server - this is typically accessible via the Vault web interface or API endpoint under the upload functionalityAffected if The UploadController endpoint for image uploads is accessible without additional access controls outside the application layer
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Check service account file system permissionsReview what directories and files the service account running the Vault Service has write access to on the host systemAffected if The service account has write permissions to sensitive system directories outside the intended upload storage root
You are affected if your Altium On Prem Enterprise Server version is below 8.1.1 AND the Vault Service with its UploadController is enabled and accessible.
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.
dbcve · scoped8.1.1
On-premise Altium Enterprise Server deployments should apply vendor-provided patches when available; meanwhile, restrict network access to the Vault Service to trusted users and monitor for suspicious upload patterns using file integrity monitoring.
Altium Enterprise Server 8.1.1
- Identify all Altium Enterprise Server On-Prem installations in your environment
- Check the current version of each installation (Vault Service UploadController component)
- Confirm the version is below 8.1.1 to determine if affected by this vulnerability
- Schedule a maintenance window and create a full backup of the current installation including databases and configuration
- Download Altium Enterprise Server version 8.1.1 from the official Altium portal or vendor distribution channels
- Follow Altium's official upgrade documentation for Enterprise Server, ensuring to back up all configuration files and databases before proceeding
- Stop all Enterprise Server services before applying the upgrade
- Apply the version 8.1.1 upgrade package to all affected servers
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-11419 — 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-2026-11419 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
- No spam, self-promotion, credentials, or personal data