CVE-2025-13815
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 weakness has been identified in moxi159753 Mogu Blog v2 up to 5.2. The affected element is an unknown function of the file /file/pictures. This manipulation of the argument filedatas causes unrestricted upload. The attack may be initiated remotely. The exploit has been made available to the public and could be exploited. The vendor was contacted early about this disclosure but did not respond in any way.
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 confidenceMogu Blog v2 up to version 5.2 contains an unrestricted file upload vulnerability in the /file/pictures endpoint. The 'filedatas' parameter accepts arbitrary file uploads without proper validation, allowing remote attackers to upload malicious executables that could lead to remote code execution.
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<= 5.2CVSS 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
- High
CVSS:3.1/AV:N/AC:L/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.
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Identify the installed Mogublog versionCheck the version file, admin panel, or configuration file typically found in the application root or config directoryAffected if The installed version is 5.2 or lower (<=5.2)
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Verify network exposure of the /file/pictures endpointTest access to the /file/pictures endpoint from an untrusted network perspective or review web server access logs for this pathAffected if The endpoint is accessible from the internet or untrusted networks without authentication
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Confirm file upload functionality is enabledReview application configuration files or settings panel for upload-related settings, check if uploads are permitted for the tested user roleAffected if File uploads are allowed and the 'filedatas' parameter is accepted without restrictions
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Inspect upload directory locationLocate the configured upload/storage directory in the application config and verify if it resides within the webrootAffected if Uploaded files are stored inside the web-accessible directory tree
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Check for file type validation on uploadsAttempt a test upload with a non-image file extension (e.g., .php, .exe, .html) to the /file/pictures endpoint and observe if it is acceptedAffected if The application accepts files without validating MIME type, extension, or file content (magic bytes)
A user is affected if they run Mogublog version 5.2 or lower with the /file/pictures endpoint exposed and the application accepts arbitrary file uploads without validation.
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 dataRestrict network access to the /file/pictures endpoint immediately, implement strict allowlist-based file type validation (MIME type + magic bytes), store uploads outside webroot, and monitor for suspicious upload activity.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-13815 — 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-2025-13815 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