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Copy & Delete Posts EUVDEUVD-2026-36139

| CVE-2026-53738 HIGH
Incorrect Authorization (CWE-863)
2026-06-10 VulnCheck GHSA-cx2j-wv5h-5j6v
7.2
CVSS 4.0 · Vendor: VulnCheck
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privilege WordPress account
  2. Delivery
    Confirm cdp_action_handling reachable via admin-ajax.php
  3. Exploit
    POST action=cdp_action_handling with malicious f value
  4. Execution
    Dispatcher skips per-function capability check
  5. Persist
    Delete posts or overwrite plugin settings
  6. Impact
    Leverage altered settings for further site impact

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires (1) the Copy & Delete Posts plugin installed at version ≤1.5.4 on a WordPress site, (2) an authenticated session for a WordPress user whose role has been explicitly added to the plugin's enabled-roles configuration (any non-admin role suffices - Editor, Author, Contributor, or even Subscriber if the operator enabled it), and (3) the ability to reach /wp-admin/admin-ajax.php over the network. Limiting factors: sites that leave the plugin's role list at admin-only are not exploitable by non-admins, the attacker must hold valid credentials (PR:L, not PR:N), and no user interaction by an admin is required.

Impact

The CVSS 4.0 vector (AV:N/AC:L/PR:L/UI:N, VI:H/VA:H, VC:N) accurately captures the situation: remote, low-complexity, requires one low-privilege session, and damages integrity and availability of site content/configuration but not confidentiality. Realistic priority is moderate-to-high for any site that delegates editorial roles (Editor, Author, Contributor, Subscriber-with-plugin-cap) to untrusted users, because privilege escalation to destructive admin-equivalent actions on this plugin's scope is one HTTP request away. There is no KEV listing and no EPSS value supplied, and no POC is referenced - so widespread opportunistic exploitation is not currently evidenced, but the bug class is trivially weaponizable once a researcher publishes the f parameter values. Note that the input provides only CVSS 4.0; the CVSS 3.1 equivalent would also be in the High range, and the absence of EPSS/KEV data should not be read as 'low risk' - it is missing data, not a clean signal.

Exploit ScenarioDerived

An attacker registers or compromises a low-privilege WordPress account (for example a Contributor or a Subscriber on a site that has granted that role to the plugin), authenticates, and sends a POST to /wp-admin/admin-ajax.php with action=cdp_action_handling and an f parameter selecting the delete-posts or update-settings branch. Because the dispatcher only verifies the coarse role gate and skips the per-function capability check, the request succeeds and the attacker mass-deletes published posts or rewrites plugin settings to pivot further. No public POC is referenced in the supplied data, but the AJAX handler name and f-parameter pattern are documented enough that a working request is straightforward to reconstruct.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 10, 2026

Broken authorization in the Copy & Delete Posts WordPress plugin through 1.5.4 lets any authenticated user assigned a plugin-enabled (non-admin) role invoke every operation exposed by the cdp_action_handling AJAX endpoint, enabling post deletion and plugin-setting tampering. The flaw stems from a missing per-function capability check that the dispatcher should enforce based on the f parameter. No public exploit identified at time of analysis and the CVE is not on CISA KEV.

RemediationAI

No vendor-released patch identified at time of analysis - neither the WordPress.org plugin page nor the VulnCheck advisory in the supplied references names a fixed version beyond 1.5.4, so administrators should monitor https://wordpress.org/plugins/copy-delete-posts/ for an update past 1.5.4 and the VulnCheck advisory at https://www.vulncheck.com/advisories/copy-delete-posts-through-privilege-escalation-via-cdp-action-handling-handler for confirmation. Until a fixed release is published, the highest-leverage compensating control is to restrict the plugin's enabled-role list to administrators only via the plugin's own settings, which removes the abusable PR:L path at the cost of losing delegated copy/delete workflows for editors. As a network-layer mitigation, block or require admin authentication on POST requests to /wp-admin/admin-ajax.php where action=cdp_action_handling using a WAF rule, accepting that this will break the plugin's UI for any non-admin role; a stricter fallback is to deactivate the plugin entirely, which fully removes the vulnerability but disables all bulk copy/delete functionality.

Affected VersionsENISA

Copy & Delete Posts 0 ≤1.5.4

Affected Packages

euvd copy_delete_posts no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Copy & Delete Posts is a WordPress plugin (vendor inisev, CPE inisev:copy_&_delete_posts) that adds bulk post-management actions and exposes a server-side dispatcher named cdp_action_handling via the WordPress admin-ajax interface. The dispatcher reads an f parameter to select which internal handler to run (delete posts, overwrite plugin settings, etc.), but enforces only a coarse 'is the caller a plugin-enabled role' gate at the entry point instead of re-checking the WordPress capability appropriate to each sub-action. This is a textbook CWE-863 (Incorrect Authorization) pattern: the trust decision is made once at the wrapper, so the more sensitive branches inherit the weakest required privilege.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (VulnCheck) PRIMARY 7.2 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
vuln.today AI 8.1 HIGH

Network-reachable admin-ajax endpoint, no user interaction, requires a low-privilege authenticated role (PR:L), and yields high integrity/availability impact via post deletion and settings overwrite with no confidentiality disclosure.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

Copy & 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.

Executive ViewAI

Why It Matters

The Copy & Delete Posts WordPress plugin (version 1.5.4 and earlier) contains a broken authorization vulnerability (CVSS 7.2) allowing authenticated users with plugin-enabled roles to delete posts and modify plugin settings. No public exploit identified at time of analysis. This threatens post integrity and operational continuity for WordPress sites relying on this plugin.

Business Impact: High
Compensating Controls

Restrict plugin-enabled role assignments to administrative-level personnel only; disable the plugin if not actively required; implement comprehensive audit logging for post deletion and plugin setting changes; monitor for unauthorized access patterns.

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
Social Media
2
Sightings
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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