CVE-2025-15546
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 · uneditedThe Iptanus File Upload WordPress plugin before 5.1.7 does not implement proper file handling when the duplicatepolicy setting is configured to "maintain both." Due to a Time-of-Check to Time-of-Use (TOCTOU) race condition between the file existence check and the actual file write operation, an authenticated attacker can overwrite files uploaded by other users.
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 confidenceThe Iptanus File Upload WordPress plugin before 5.1.7 contains a Time-of-Check to Time-of-Use (TOCTOU) race condition vulnerability. When the duplicatepolicy setting is configured to 'maintain both,' the plugin checks for file existence before writing but fails to maintain atomicity between the check and write operations, allowing an authenticated attacker to win the race and overwrite files uploaded by other users.
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
- Low
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/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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Confirm Iptanus File Upload plugin is installedList installed WordPress plugins via admin dashboard or inspect the wp-content/plugins/ directory for a folder named 'file-upload' or similar Iptanus-related plugin folderAffected if The plugin directory exists in the WordPress installation
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Check the installed plugin versionView the plugin version in the WordPress admin plugins list, or open the main plugin PHP file and locate the 'Version' header commentAffected if The version number is lower than 5.1.7 (e.g., 5.1.6, 5.1.5, etc.)
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Locate the duplicatepolicy settingAccess the plugin settings page in the WordPress admin dashboard under the Iptanus File Upload settings, or query the wp_options table for options containing 'duplicatepolicy'Affected if The duplicatepolicy option exists and is set to 'maintain both' (or equivalent value that keeps both files)
You are affected if the Iptanus File Upload plugin is installed with a version below 5.1.7 AND the duplicatepolicy setting is configured to 'maintain both', as this specific configuration enables the TOCTOU race condition window.
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.
dbcve · scopedUpdate the Iptanus File Upload plugin to version 5.1.7 or later, which implements proper file handling to prevent the TOCTOU race condition.
Iptanus File Upload plugin version 5.1.7
- 1. Update the Iptanus File Upload WordPress plugin to version 5.1.7 or later.
- 2. Verify the update was successful by checking the plugins page in WordPress admin.
- 3. Confirm the duplicatepolicy setting is configured as needed for your use case.
Generated from the published advisory — verify against the referenced sources before acting.
- 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-2025-15546 — 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-2025-15546 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