CVE-2026-53738
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 · uneditedCopy & Delete Posts through 1.5.4 lets any plugin-enabled non-admin role invoke every operation in the cdp_action_handling AJAX handler. Attackers with an enabled role can delete posts or overwrite plugin settings via the f parameter, bypassing per-function capability checks.
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 confidenceThe Copy & Delete Posts plugin through version 1.5.4 contains a broken access control vulnerability in its cdp_action_handling AJAX handler. The handler fails to properly enforce capability checks before executing operations, allowing any authenticated user with a plugin-enabled non-admin role to delete posts or modify plugin settings via the 'f' parameter, effectively bypassing intended per-function authorization.
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
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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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Verify the Copy & Delete Posts plugin is installedCheck your WordPress plugins directory or wp-admin plugins list for 'Copy & Delete Posts' and note the installed version numberAffected if The plugin is installed and the version is 1.5.4 or lower (any version through 1.5.4)
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Locate the vulnerable AJAX handlerSearch the plugin files for the function or handler named 'cdp_action_handling' - typically found in the main plugin PHP file or an includes/AJAX fileAffected if The cdp_action_handling handler exists in the installed plugin version
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Identify user roles with plugin accessCheck the plugin settings or code to determine which user roles are enabled or permitted to use the plugin functionalityAffected if Any role other than Administrator is granted access to the plugin (non-admin users with plugin access)
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Verify the vulnerable parameter is in useExamine the cdp_action_handling handler code to confirm it accepts an 'f' parameter for performing sensitive operationsAffected if The handler accepts and processes an 'f' parameter without sufficient capability verification
You are affected if the Copy & Delete Posts plugin versions through 1.5.4 is installed, the cdp_action_handling AJAX handler exists, and non-admin authenticated users have access to the plugin functionality.
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 to version 1.5.5 or later which includes proper capability validation for all AJAX actions; until patched, disable or restrict access to the cdp_action_handling AJAX endpoint.
- 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-2026-53738 — 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-2026-53738 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