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Fluent CRM CVE-2026-109694

| EUVDEUVD-2026-102007 CRITICAL
Incorrect Privilege Assignment (CWE-266)
2026-10-15 audit@patchstack.com GHSA-4g3p-vxjx-9qr5
9.8
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
    Identify WordPress site running Fluent CRM ≤3.2.5
  2. Delivery
    Send request to vulnerable plugin endpoint
  3. Exploit
    Abuse incorrect privilege assignment
  4. Execution
    Escalate to administrator capabilities
  5. Impact
    Full site compromise

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Privilege assignment review
Exploitation Conditions

The target must run the Fluent CRM plugin for WordPress at any version from the initial release through 3.2.5. The flaw is an incorrect privilege assignment (CWE-266) enabling privilege escalation; the input vector claims no authentication or user interaction is required, but the privilege-escalation nature strongly suggests the attacker may need a low-privileged authenticated WordPress account as the starting point - this is the key limiting factor to confirm. The supplied description provides no specific feature, configuration setting, or deployment mode as a precondition, so exploitation appears tied to the plugin's default presence rather than a non-default option; the exact vulnerable endpoint and privilege prerequisite are not detailed in the available data.

Impact

The input CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) scores 9.8 Critical and describes a fully remote, unauthenticated, low-complexity attack with no user interaction yielding high confidentiality, integrity, and availability impact. However, there is a notable internal conflict: the vulnerability class is CWE-266 Incorrect Privilege Assignment resulting in Privilege Escalation, which by definition implies an actor escalating FROM some existing (typically low) privilege level, yet the vector asserts PR:N (unauthenticated). This tension is common in Patchstack-sourced WordPress plugin entries and should be verified - if a low-privileged authenticated account (e.g., subscriber) is actually required, real-world risk is meaningfully lower than the 9.8 suggests. No EPSS score, SSVC decision data, KEV listing, or public POC was provided, so exploitation probability and automatability cannot be quantified from the input; exploitation status is 'no public exploit identified at time of analysis.' Net: treat as a high-priority patch for any site running Fluent CRM given the privilege-escalation-to-full-compromise outcome, but the true priority hinges on whether authentication is genuinely required - resolve the PR:N versus privilege-escalation-semantics conflict with the Patchstack advisory before assuming trivial unauthenticated takeover.

Exploit ScenarioDerived

An attacker interacts with the Fluent CRM plugin on a target WordPress site (version 3.2.5 or earlier) and abuses an incorrect privilege assignment to grant themselves elevated capabilities, escalating to administrator-level control over the site. Given the network attack vector and low complexity, the request can likely be scripted against exposed WordPress installs; no public exploit code is identified at time of analysis, so weaponization effort is presently unknown.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 15, 2026

Privilege escalation in the Fluent CRM WordPress plugin (all versions through 3.2.5) allows a low-privileged account to elevate itself to higher privileges, including administrator-equivalent capabilities, by abusing an incorrectly assigned privilege (CWE-266). The vendor-supplied vector scores this 9.8 (AV:N/AC:L/PR:N/UI:N), but the independent vector analysis assigns PR:L, meaning the realistic starting point is an authenticated low-privileged WordPress account, and that prerequisite is the one condition that most changes the real-world risk; the exact vulnerable endpoint and required account level are not detailed in the available data. No public exploit code has been identified at time of analysis, and Fluent CRM is not listed in CISA KEV; the sole public reference is the Patchstack advisory. Sites running Fluent CRM 3.2.5 or earlier should treat this as high priority because WordPress administrator takeover typically yields full site compromise, data theft, and persistent backdooring.

RemediationAI

No vendor-released patch version is identified in the available data, so remediation should begin by confirming a fixed release directly with WP ManageNinja and monitoring the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/fluent-crm/vulnerability/wordpress-fluent-crm-plugin-3-2-5-privilege-escalation-vulnerability?_s_id=cve) for the first patched version, then updating Fluent CRM to that release and re-verifying the plugin version afterward; the version ceiling of 3.2.5 in the description strongly suggests a fix exists in a newer build, but that is not confirmed here and the exact version must not be assumed. Until a patch is applied, mitigate by tightening the privilege prerequisite: disable open WordPress and Fluent CRM user/contact registration so untrusted parties cannot obtain even a low-privileged account, force the default new-user role to Subscriber, and audit existing accounts for unexpected role promotions (the attacker's goal is administrative capability, so any newly created administrator or capability change is a detection signal). Restrict or block unauthenticated access to the plugin's REST and admin-ajax endpoints at the web server or WAF where feasible, accepting that this can break front-end forms and CRM ingestion, and apply virtual patching via a WAF or a WordPress security plugin if the site cannot be taken offline for testing. Finally, review wp_users, wp_usermeta and Fluent CRM logs for role/capability changes and rotate administrator credentials and salts if compromise is suspected.

Affected VersionsENISA

Fluent CRM 0 ≤3.2.5

Affected Packages

euvd fluent_crm 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 root cause class is CWE-266 (Incorrect Privilege Assignment): the plugin assigns a role, capability, or user-level property based on insufficiently validated input rather than enforcing a strict capability check on the acting user. In WordPress terms this usually materializes at an AJAX handler (admin-ajax.php action), a REST API route, or a form-processing function that calls a role/capability setter without a current_user_can() guard, without a valid nonce, or while trusting a user-supplied role parameter; a low-privileged account (subscriber, customer, or a Fluent CRM contact/limited user) can therefore grant itself elevated capabilities such as manage_options or administrator. Fluent CRM is a marketing-automation and CRM plugin that stores contact records and exposes both public-facing and administrative endpoints, so the surface for such a call includes contact-facing forms as well as plugin admin screens. The independent vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) differs from the supplied vector only in the privilege-required metric, which indicates the disagreement is entirely about whether an initial foothold account is needed; no CPE identifiers were supplied, so affected-product scoping relies on the plugin slug 'fluent-crm' and the version ceiling in the description.

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Severity by source

Vendor (patchstack) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Privilege escalation implies a starting foothold, so PR:L rather than the input's PR:N; network, low-complexity, no-interaction path to full site control gives C/I/A:H.

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

Primary rating from Vendor (patchstack).

CVSS VectorVendor: patchstack

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

DescriptionCVE.org

Incorrect Privilege Assignment vulnerability in WP ManageNinja LLC Fluent CRM fluent-crm allows Privilege Escalation.This issue affects Fluent CRM: from n/a through 3.2.5.

Executive ViewAI

Why It Matters

The Fluent CRM plugin for WordPress (all versions through 3.2.5) contains a critical privilege-escalation flaw that can allow a low-privileged account holder to gain administrator-equivalent control of a website. Because Fluent CRM is widely deployed on marketing and membership sites, any organization running it - including those with open subscriber registration - faces potential full site takeover, theft of customer and contact data, and persistent attacker access. No vendor patch is currently available, so leadership should treat this as an active exposure-management decision rather than a routine update.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: deactivate or remove the Fluent CRM plugin (all versions through 3.2.5) on exposed sites; disable open user registration and restrict the ability of low-privileged accounts to modify roles; audit WordPress user roles and remove unnecessary accounts; enforce MFA and strong credential hygiene for administrators; apply WAF or virtual-patching rules blocking unauthorized role-escalation requests; and monitor logs for rogue administrator accounts, privilege changes, and file modifications. Note that the vendor CVSS vector indicates an unauthenticated attack (PR:N), while independent vector analysis assesses an authenticated low-privileged prerequisite (PR:L); no public exploit code identified at time of analysis and Fluent CRM is not listed in CISA KEV.

Threat Intelligence Overview

EPSS Score
0.3%
Top 82% exploitable
Prevalence
Medium
popular WordPress CRM/email-marketing plugin, common but not on every site
Social Media
4
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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Yes
Human Impact
High
Technical Impact
Total

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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