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FlexTable EUVDEUVD-2026-31744

| CVE-2026-24582 MEDIUM
Missing Authorization (CWE-862)
2026-05-25 Patchstack GHSA-884p-7x3h-pgqw
4.3
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

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

  1. Access
    Obtain low-privilege WordPress subscriber account
  2. Delivery
    Identify FlexTable AJAX or REST endpoint lacking capability check
  3. Exploit
    Send authenticated request to restricted endpoint
  4. Execution
    Bypass authorization gate without required role
  5. Impact
    Perform unauthorized modification of table data or plugin configuration

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
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 a valid WordPress user account with at minimum subscriber-level privileges on the target installation - unauthenticated exploitation is not possible per the CVSS PR:L (low-privilege required) vector. The target site must be running FlexTable plugin version 3.24.0 or earlier. The specific plugin endpoint or feature subject to the missing authorization check is not disclosed in available public data. The attack is not automatable per SSVC, indicating it requires deliberate manual interaction rather than scripted mass targeting. Exploitation is further constrained to environments where an attacker can obtain a low-privilege account, either through open user registration, credential theft, or social engineering - sites that disable public registration and restrict account creation to administrators significantly reduce realistic attack surface.

Impact

The CVSS 4.3 (Medium) score reflects a network-accessible attack path requiring low privilege (PR:L), low complexity (AC:L), no user interaction, with impact confined to limited integrity modification (I:L) and no confidentiality or availability breach (C:N/A:N). The SSVC assessment independently corroborates a low-urgency posture: exploitation status is none, the attack is not automatable, and technical impact is only partial. EPSS at 0.03% (8th percentile) places this in the lowest tier of exploitation probability. The 'Authentication Bypass' tag attached to this CVE should not be interpreted as unauthenticated access - the CVSS PR:L vector confirms a low-privilege account is required, and the tag refers to bypassing authorization checks rather than bypassing authentication itself; these are distinct concepts. Collectively, the signals indicate this is a real but low-urgency vulnerability best addressed through routine patch management rather than emergency response. No conflicting signals between data sources were identified.

Exploit ScenarioDerived

An attacker with a low-privilege WordPress account (e.g., a registered subscriber on a site with open user registration) sends a crafted authenticated request directly to a FlexTable AJAX or REST endpoint that lacks a capability check. The request triggers a restricted plugin operation - such as modifying table sync configuration or altering table data - that should require editor or administrator privileges. No public proof-of-concept code exists at time of analysis, though broken access control vulnerabilities of this class in WordPress plugins are straightforward to discover and exploit manually once an account is obtained.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 08, 2026

FlexTable WordPress plugin (versions up to and including 3.24.0) by WPPOOL contains a missing authorization vulnerability enabling low-privileged authenticated users to perform restricted plugin actions beyond their intended access level, resulting in limited but unauthorized integrity modifications. The flaw stems from CWE-862 (Missing Authorization), where plugin endpoints fail to verify that an authenticated user holds the required WordPress capability before executing privileged operations. No public exploit code exists and this vulnerability is not in the CISA Known Exploited Vulnerabilities catalog; EPSS scoring at 0.03% (8th percentile) confirms negligible likelihood of broad exploitation at this time.

RemediationAI

Update the FlexTable plugin to a version beyond 3.24.0 once a patched release is available from WPPOOL; verify the specific fixed version number directly via the WordPress plugin repository or the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/sheets-to-wp-table-live-sync/vulnerability/wordpress-flextable-plugin-3-24-0-broken-access-control-vulnerability, as an exact patched release version is not independently confirmed in the available data. As a compensating control pending patch deployment, restrict WordPress user registration to prevent unknown parties from obtaining the low-privilege accounts required for exploitation; remove or suspend active subscriber-level accounts that are not operationally necessary, as this eliminates the prerequisite access tier. A web application firewall rule scoped to block unauthorized requests to FlexTable's AJAX or REST endpoints from low-privilege sessions can provide additional layered defense, though WAF tuning requires knowledge of the specific endpoint identifiers. Note that disabling the plugin entirely will interrupt any Google Sheets-linked table content on the site - weigh this trade-off against the low EPSS and SSVC exploitation signal before taking that step.

Affected VersionsENISA

FlexTable n/a ≤3.24.0

Affected Packages

euvd flextable 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 FlexTable plugin (WordPress slug: sheets-to-wp-table-live-sync, CPE: cpe:2.3:a:wppool:flextable:*:*:*:*:*:*:*:*) provides table management by syncing Google Sheets data into WordPress-rendered tables. CWE-862 (Missing Authorization) indicates the plugin registers AJAX hooks or REST API endpoints that validate authentication - confirming a user is logged in - but omit the subsequent capability check verifying whether that user's role is authorized to perform the requested action. This is a structurally distinct failure from authentication bypass: the user is correctly identified, but the authorization gate is absent. In WordPress plugin architecture this pattern commonly arises when developers call wp_verify_nonce() without a paired current_user_can() check, allowing any authenticated role - including subscriber - to invoke functionality reserved for editors or administrators.

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Severity by source

Vendor (Patchstack) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Primary rating from Vendor (Patchstack) · only source for this CVE.

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

DescriptionCVE.org

Missing Authorization vulnerability in WPPOOL FlexTable allows Exploiting Incorrectly Configured Access Control Security Levels.

This issue affects FlexTable: from n/a through 3.24.0.

Threat Intelligence Overview

EPSS Score
0.0%
Top 92% exploitable
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
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
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
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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