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Profile Builder EUVDEUVD-2026-114292

| CVE-2026-54854 MEDIUM
Incorrect Privilege Assignment (CWE-266)
2026-10-30 Patchstack GHSA-wfv3-5j9x-3m92
6.3
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
    Authenticate as Contributor user
  2. Exploit
    Invoke profile/role-handling function
  3. Execution
    Exploit incorrect privilege assignment
  4. Impact
    Gain elevated privileges

Vulnerability Assessment

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

Exploitation requires an authenticated Contributor-level account on a WordPress site running Profile Builder version 4.0.5 or earlier (PR:L); the attacker leverages the plugin's incorrect privilege-assignment logic (CWE-266) to escalate beyond the Contributor role. Limiting factors: the attacker must first obtain or be granted a Contributor account (relevant on sites that permit user registration or multi-author workflows), and the flaw is confined to deployments of this specific plugin at the affected versions. No user interaction is required (UI:N) and no non-default configuration is named in the available sources; the exact trigger mechanism and the precise elevated privilege obtained are not described in the available sources.

Impact

This is a moderate-severity, authenticated privilege-escalation flaw (CVSS 6.3, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) in the Profile Builder WordPress plugin by Cozmoslabs, classified as CWE-266 (Incorrect Privilege Assignment). The CVSS vector indicates a network-reachable attack with low complexity and no user interaction, but it requires existing low-level authentication (PR:L), and the description explicitly scopes the attacker to a Contributor account - so this is NOT remote-unauthenticated. No EPSS score was supplied and the CVE is not on CISA KEV, so there is no public signal of mass or active exploitation; exploitation status is 'no public exploit identified at time of analysis.' The vuln.today priority of 'this_month' and Patchstack as the reporting source are consistent with a real-but-not-emergency issue: a genuine privilege-escalation bug worth patching on a normal cycle rather than a drop-everything event. The scope is unchanged (S:U) and all three impacts are rated Low, meaning the escalation is bounded rather than a full takeover per the CVSS data - though CWE-266 escalation in a user-management plugin can be serious if it reaches Administrator; the supplied data does not state the exact target privilege level, so the real impact ceiling is not confirmed. MISSING DATA: no EPSS, no SSVC decision breakdown, no confirmed fixed version, and the single reference is a Patchstack database advisory rather than a vendor advisory or working exploit.

Exploit ScenarioDerived

An attacker who already holds (or registers for) a Contributor-level account on a WordPress site running Profile Builder <= 4.0.5 abuses an incorrect privilege-assignment flaw to grant themselves higher privileges than their role should allow. No victim interaction is needed, but the attacker must first be authenticated as a low-privilege user. No public exploit code has been identified for this CVE at the time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 30, 2026

Contributor-level users of the Cozmoslabs Profile Builder plugin for WordPress (versions up to and including 4.0.5) can escalate beyond their assigned role because the plugin mishandles privilege assignment (CWE-266). An attacker who already holds a Contributor account - plausible on sites with open registration or multi-author workflows - can leverage the flawed role-handling logic over the network without any user interaction, with low confidentiality, integrity and availability impact (CVSS 6.3, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L). No public exploit code was identified at time of analysis and the issue is not in CISA KEV; the exact trigger path and the specific elevated capability obtained are not described in the available sources.

RemediationAI

No vendor-released patch version is identified in the available sources; the advisory at https://patchstack.com/database/wordpress/plugin/profile-builder/vulnerability/wordpress-profile-builder-plugin-4-0-5-privilege-escalation-vulnerability?_s_id=cve should be monitored for the fixed release, and the plugin should be updated as soon as a version later than 4.0.5 is published. Until then, treat every Contributor account as a potential escalation path: disable or tightly gate open registration and manual Contributor provisioning on sites running the plugin (trade-off: blocks legitimate self-service signups), and audit existing Contributor users and their capabilities for unexpected role changes (trade-off: detection only, not prevention). If Profile Builder's front-end registration and profile features are not in active use, deactivating and removing the plugin eliminates the exposure entirely (trade-off: loss of profile, registration and role-editing functionality). Adding role/capability auditing or a capability-management hardening plugin provides monitoring but does not remove the underlying incorrect privilege assignment.

Affected VersionsENISA

Profile Builder n/a ≤4.0.5

Affected Packages

euvd profile_builder 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

Profile Builder is a WordPress plugin from Cozmoslabs that adds front-end user registration, profile editing and role-management features. Because WordPress authorisation revolves around named roles and capabilities, a plugin that performs role or capability writes itself must enforce the same trust boundaries as core; CWE-266 (Incorrect Privilege Assignment) indicates that this enforcement is defective, allowing a low-privileged Contributor to obtain capabilities the plugin should not grant. The CPE string cpe:2.3:a:cozmoslabs:profile_builder:*:*:*:*:*:*:*:* is recorded with a wildcard version, with the affected range stated in the description as all releases through 4.0.5. Both the precise code path that performs the incorrect assignment and the resulting privilege level are unverified in the supplied reporting, which comes from a Patchstack database entry; no CWE-adjacent mechanism beyond incorrect privilege assignment should be assumed.

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Severity by source

Vendor (Patchstack) PRIMARY 6.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
vuln.today AI 6.3 MEDIUM

Network-reachable plugin action with low complexity and no interaction, but requires an authenticated Contributor account, so PR:L; impacts kept Low and scope unchanged per the described bounded escalation.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

DescriptionCVE.org

Contributor Privilege Escalation in Profile Builder <= 4.0.5 versions.

Threat Intelligence Overview

EPSS Score
0.2%
Top 85% exploitable
Prevalence
Medium
popular WordPress user-management plugin, common but not on every site
Social Media
1
Sightings
Data Quality
3 sources
Confidence: Low

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 0.2%
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
Total

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
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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