CVE-2026-52101
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 · uneditedAn issue in andreimarcu linux-server v.1.0 through v.2.3.8 allows a remote attacker to obtain sensitive information via the function uploadRemote function in upload.go
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 critical information disclosure vulnerability exists in the uploadRemote function of andreimarcu linux-server versions 1.0 through 2.3.8. The vulnerability allows remote attackers to obtain sensitive information, likely through improper access controls or path traversal in the file upload functionality.
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 if andreimarcu linux-server is installedLocate the linux-server binary or package on your system. Common locations include /usr/bin/linux-server, /usr/local/bin/linux-server, or check via package manager (dpkg -l | grep linux-server or rpm -qa | grep linux-server)Affected if The software named andreimarcu linux-server is found on the system
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Determine the installed versionRun the binary with version flag (linux-server --version or linux-server -v) or check the package version via package managerAffected if The installed version is 1.0 through 2.3.8 (inclusive)
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Locate the upload.go source fileFind the upload.go file in the application directory - typically in the source code under the path containing the uploadRemote function, or check the application configuration for upload-related settingsAffected if The upload.go file exists and contains the uploadRemote function definition
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Verify uploadRemote function is enabledCheck the application configuration files (often config.json, config.yaml, or similar) for any settings that enable or expose the uploadRemote function, or review the code to see if this function is actively routedAffected if The uploadRemote function is enabled or exposed in the application configuration or routing
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Check access control configurationExamine the application configuration for authentication settings related to file uploads, or review upload.go to see if access control checks are present before the uploadRemote function executesAffected if No authentication or weak access controls are configured for the upload functionality
You are affected if andreimarcu linux-server versions 1.0 through 2.3.8 is installed AND the uploadRemote function is enabled with inadequate access controls.
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 dataUpgrade to a patched version if available; otherwise, disable the uploadRemote function, review the upload.go code for access control and path validation flaws, and implement proper authentication and input validation before deployment.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-52101 — 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-2026-52101 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