CVE-2025-25683
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 · uneditedAlekSIS-Core is vulnerable to Incorrect Access Control. Unauthenticated users can access all PDF files. This affects AlekSIS-Core 3.0, 3.1, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.2.0 and 3.2.1.
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 confidenceAlekSIS-Core contains an incorrect access control vulnerability where unauthenticated users can access all PDF files stored in the system. This indicates a failure in the authorization checks for file serving endpoints, allowing unauthorized access to potentially sensitive documents without any authentication credentials.
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
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:H/PR:N/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 AlekSIS-Core installationLocate the AlekSIS-Core application installation directory, package, or running service. Common locations include /opt/aleksis, /var/www/aleksis, or as a Python package in the system packages.Affected if AlekSIS-Core is installed and running
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Determine installed versionCheck the installed version of AlekSIS-Core using package manager (pip list, dpkg, rpm) or look for a VERSION file in the installation directory.Affected if The installed version is within the affected range (no specific range provided; compare to any available version information)
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Verify PDF file serving endpoint accessibilityAttempt to access a PDF file via the web interface or API endpoint without providing any authentication credentials. Use a browser or curl command to request a known PDF path such as /media/, /files/, or /documents/ with a .pdf extension.Affected if PDF files are served and accessible without any login or authentication token
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Check for authentication requirement on PDF endpointsInspect the file serving view or controller code in the AlekSIS-Core application to verify if authorization checks are present before serving PDF files. Look for decorators like @login_required or permission checks on file download views.Affected if No authorization checks are enforced on PDF file serving endpoints
If PDF files stored in AlekSIS-Core can be accessed without any authentication credentials, the environment is affected by this vulnerability.
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 proper authentication and authorization checks on PDF file serving endpoints to ensure only authenticated and authorized users can access PDF files. This likely involves reviewing and fixing the access control logic in the file download/view mechanism.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-25683 — 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-2025-25683 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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- Version or environment caveats, and links to real fixes
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