CVE-2025-2306
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 Improper Access Control vulnerability was identified in the file download functionality. This vulnerability allows users to download sensitive documents without authentication, if the URL is known. The attack requires the attacker to know the documents UUIDv4.
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 confidenceThis is an improper access control vulnerability in the file download functionality where the application fails to verify user authentication before serving documents. An attacker with knowledge of a document's UUIDv4 can directly access and download sensitive files without any 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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 file download endpointsReview your application's URL patterns and routing configuration to locate all endpoints that serve file downloads. Look for patterns containing '/download/', '/file/', '/document/', or similar paths that return file content.Affected if File download endpoints exist and are accessible via predictable URL patterns such as UUIDv4 identifiers
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Test unauthenticated access to download URLsAttempt to access a known or generated UUIDv4-formatted download URL using an HTTP client (e.g., curl) without providing any authentication credentials or session cookies.Affected if The request returns a successful HTTP 200 response with file content instead of requiring authentication (e.g., redirect to login, HTTP 401/403)
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Verify authentication enforcement on file endpointsInspect the application code or security configuration for the file download handlers. Check if authentication checks (such as session validation, token verification, or authorization logic) are present and enforced before serving file content.Affected if Authentication and authorization checks are missing, disabled, or conditionally applied only to some download paths
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Confirm UUIDv4 URL predictabilityDetermine whether document URLs expose predictable or enumerable UUIDv4 identifiers. Test if different UUID values can be accessed sequentially or guessed to retrieve different files.Affected if Document URLs use sequential or predictable identifiers rather than cryptographically random UUIDs, making enumeration feasible
Your environment is affected if file download endpoints with UUIDv4 identifiers are accessible without any authentication credentials being provided.
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 validation on all file download endpoints to ensure only authenticated and authorized users can access documents.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-2306 — 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-2025-2306 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
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