CVE-2026-39559
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 · uneditedUnauthenticated Local File Inclusion in Uppercase < 1.2.2 versions.
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 confidenceUnauthenticated Local File Inclusion (LFI) vulnerability in Uppercase software versions prior to 1.2.2 allows remote attackers to read arbitrary files on the server by manipulating input to file inclusion functions. The lack of authentication requirement and the high CVSS score (8.1) indicates this is a remotely exploitable, high-impact vulnerability that could expose sensitive system files, configuration data, and source code.
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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/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.
-
Identify Uppercase installationSearch for Uppercase software on the system by checking common web directories (e.g., /var/www/, /opt/, C:\inetpub\), looking for application files named 'uppercase' or a directory containing 'uppercase' in the nameAffected if Uppercase software is found on the system
-
Determine installed versionLocate and read the version file or check the application binary/dll for version metadata. Common locations: version.txt, about page, or examine the main executable for version stringsAffected if Installed version is found to be lower than 1.2.2
-
Verify web exposureCheck if the Uppercase web interface is accessible by making a request to the server on common ports (80, 443, 8080) and identifying if Uppercase endpoints respondAffected if Uppercase web interface is accessible from network
-
Test for directory traversalSend an HTTP request with directory traversal sequences (e.g., ../../../../etc/passwd or ..\..\..\windows\win.ini) to Uppercase endpoints and observe if file contents are returnedAffected if Directory traversal requests successfully return arbitrary file contents
The environment is affected if Uppercase software version is identified as lower than 1.2.2 and the web interface is exposed, allowing unauthenticated directory traversal attacks to read arbitrary files.
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 Uppercase to version 1.2.2 or later. If immediate upgrade is not possible, implement strict input validation and path sanitization on all file inclusion parameters, and consider restricting file access permissions as a temporary mitigation.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39559 — 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-2026-39559 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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