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Cozy Blocks CVE-2026-97070

| EUVDEUVD-2026-92587 MEDIUM
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-10-05 Patchstack GHSA-xg4m-cxjw-r2gh
6.9
CVSS 4.0 · Vendor: Patchstack
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Attack ChainAIDerived

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

  1. Access
    Reach WordPress site with Cozy Blocks
  2. Delivery
    Identify object-reference parameter
  3. Exploit
    Tamper user-controlled key value
  4. Execution
    Server skips authorization check
  5. Impact
    Retrieve unauthorized data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Object-level authorization, IDOR prevention
Exploitation Conditions

Exploitation requires that the target WordPress installation has the CozyThemes Cozy Blocks (cozy-addons) plugin installed and active at version 2.2.23 or earlier. The flaw lies in plugin functionality that accepts a user-controlled object/key reference without a proper authorization check (CWE-639), so an attacker reaching that endpoint over the network can reference resources they do not own. Per the CVSS 4.0 vector (PR:N/UI:N/AC:L/AT:N), no authentication, no user interaction, and no special attack prerequisites are stated, and impact is limited to low confidentiality disclosure (VI:N/VA:N) - the primary limiting factors are that only sites running the vulnerable plugin version are affected and that the data exposure is bounded rather than enabling modification or takeover.

Impact

This is a moderate-severity authorization bypass (IDOR, CWE-639) in the CozyThemes Cozy Blocks WordPress plugin, scored CVSS 4.0 6.9 by the reporting source (Patchstack). The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N) indicates network-reachable, low-complexity, unauthenticated exploitation with LOW confidentiality impact only and NO integrity or availability impact - meaning the realistic outcome is unauthorized disclosure of a limited set of data via manipulated object references, not full compromise. No EPSS score, no CISA KEV listing, and no public POC were supplied in the input, so there is no signal of active or widespread exploitation at this time; the exploitation status is therefore 'no public exploit identified at time of analysis.' Weighing the signals together, this is a real but lower-priority issue: the unauthenticated network vector and low complexity make it easy to attempt, but the confined confidentiality-only impact and lack of any exploitation evidence argue against emergency treatment. One point to verify: the CWE-639 user-controlled-key pattern typically presupposes some object/resource context, yet the vector asserts PR:N - confirm with the vendor/Patchstack advisory whether truly no authentication is required or whether a subscriber-level account is needed, as this materially changes real-world risk.

Exploit ScenarioDerived

An attacker interacts with a Cozy Blocks plugin endpoint on a target WordPress site and substitutes or increments a user-controlled identifier (object key) in a request to reference records belonging to other users or scopes. Because access control is incorrectly configured, the server returns data the attacker is not authorized to view, enabling unauthorized disclosure of limited information. No public exploit code was identified in the provided data, and the CVSS vector indicates this requires no authentication, no user interaction, and low attack complexity.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 05, 2026

Authorization bypass in CozyThemes Cozy Blocks WordPress plugin versions up to 2.2.23 allows unauthenticated remote attackers to access data they are not authorized to view via an insecure direct object reference (IDOR). The flaw, rated CVSS 4.0 6.9 by Patchstack, requires no authentication or user interaction and results in low confidentiality impact only. No public exploit code has been identified at time of analysis.

RemediationAI

No vendor-released patch has been identified at time of analysis. The primary remediation is to disable or remove the Cozy Blocks plugin until an official fix is available. As a compensating control, restrict network access to the vulnerable endpoint, or implement a Web Application Firewall (WAF) rule to detect and block attempts to manipulate object references in plugin requests. Note that disabling the plugin may remove functionality from the site. Monitor the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/cozy-addons/vulnerability/wordpress-cozy-blocks-plugin-2-2-23-insecure-direct-object-references-idor-vulnerability?_s_id=cve for updated patch information. If the plugin is essential, custom code to add authorization checks to the affected functionality could mitigate the issue, but this requires development expertise and thorough testing.

Affected VersionsENISA

Cozy Blocks 0 ≤2.2.23

Affected Packages

euvd cozy_blocks 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

The vulnerability is a CWE-639 authorization bypass through user-controlled key, commonly known as an insecure direct object reference (IDOR). The Cozy Blocks plugin for WordPress fails to verify that the requesting user has permission to access the object identified by a user-supplied key, allowing an attacker to manipulate that key to access resources belonging to other users or the system. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N) indicates the attack is network-reachable, requires no privileges or user interaction, and has low confidentiality impact only - no integrity or availability impact. The CPE cpe:2.3:a:cozythemes:cozy_blocks:*:*:*:*:*:*:*:* identifies the affected product as the Cozy Blocks plugin from CozyThemes. Our independent assessment using CVSS 3.1 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) is consistent with this low-impact, unauthenticated information disclosure.

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Severity by source

Vendor (Patchstack) PRIMARY 6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
vuln.today AI 5.3 MEDIUM

Network-reachable unauthenticated IDOR (PR:N, AC:L) yielding limited data disclosure only, so C:L with I:N/A:N and no scope change.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

DescriptionCVE.org

Authorization Bypass Through User-Controlled Key vulnerability in CozyThemes Cozy Blocks cozy-addons allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Cozy Blocks: from n/a through 2.2.23.

Threat Intelligence Overview

EPSS Score
0.3%
Top 83% exploitable
Prevalence
Low
niche WordPress Gutenberg blocks add-on plugin, limited install base
Data Quality
6 sources
Confidence: High

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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