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Ultimate Member CVE-2026-62059

| EUVDEUVD-2026-90809 HIGH
SQL Injection (CWE-89)
2026-10-01 Patchstack GHSA-w76c-xh7g-9m8m
7.6
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 high-privilege plugin account
  2. Delivery
    Send crafted request to vulnerable parameter
  3. Exploit
    Inject blind SQL into unneutralized query
  4. Execution
    Infer database contents via boolean/time responses
  5. Impact
    Exfiltrate user data and secrets

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Persistence

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

Exploitation Conditions

Requires an authenticated WordPress user holding a HIGH-privilege role (PR:H) - e.g. administrator or an equivalently trusted Ultimate Member role - able to reach the affected plugin input. The Ultimate Member plugin (<=2.13.1) must be installed and active. Exploitation is remote over the network with low complexity and no user interaction once that privilege is held, but the high authentication bar means this is realistically an insider-abuse or post-account-compromise condition rather than unauthenticated remote attack. No special non-default configuration is indicated beyond having the plugin installed.

Impact

This is a genuine but access-gated SQL injection flaw. The CVSS 3.1 vector (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L, score 7.6) describes a network-reachable, low-complexity attack that nonetheless requires HIGH privileges (PR:H) - meaning the attacker must already hold an administrative or equivalently trusted role in the WordPress/Ultimate Member instance. That privilege requirement is the dominant risk-limiting factor and substantially lowers real-world urgency versus an unauthenticated SQLi. No EPSS score, no CISA KEV listing, and no public proof-of-concept are present in the supplied data, so exploitation status is 'no public exploit identified at time of analysis.' The S:C (scope change) and C:H chosen by Patchstack reflect database-level confidentiality impact beyond the application; I lean toward S:U (the database is typically within the same security authority as the plugin), which would place my own score nearer 6.8 - a directional agreement with a scope-metric discrepancy noted. Net: a real priority for defenders who delegate admin/high-privilege roles widely, but not a drop-everything issue given the PR:H gate and absence of exploitation signals.

Exploit ScenarioDerived

An attacker who already possesses a high-privilege Ultimate Member/WordPress account (or who has compromised such an account) submits crafted input to an affected plugin parameter that is concatenated into a SQL query without neutralization. Because the injection is blind, the attacker infers data through boolean/time-based responses to progressively extract user records, password hashes, and secrets from the WordPress database. No public PoC is available, and the required high privilege level makes this a post-compromise or insider-abuse scenario rather than mass opportunistic exploitation.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 01, 2026

Blind SQL injection in the Ultimate Member WordPress plugin (versions through 2.13.1) lets an authenticated high-privilege account - an administrator or an equivalently trusted Ultimate Member role - inject SQL into plugin-supplied input and read database contents one inference at a time. The flaw is network-reachable with low attack complexity and no user interaction, but the CVSS vector (PR:H) means it is realistically an insider-abuse or post-account-compromise scenario rather than an unauthenticated remote attack. There is no confirmed active exploitation (not in CISA KEV) and no public exploit code identified at time of analysis; confidentiality impact is high, while integrity and availability impact are limited to none/low.

RemediationAI

No vendor-released patch version is identified in the available intelligence for CVE-2026-62059, so the first action is to confirm the current fixed release on the WordPress.org plugin page and in the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/ultimate-member/vulnerability/wordpress-ultimate-member-plugin-2-13-1-sql-injection-vulnerability?_s_id=cve and upgrade Ultimate Member to any version above 2.13.1 that the vendor confirms as patched - do not treat 2.13.1 itself as safe. Where an upgrade cannot be applied immediately, note that exploitation requires a HIGH-privilege authenticated account (PR:H), so the highest-value compensating control is privilege reduction: audit WordPress and Ultimate Member role assignments, remove standing administrator rights from accounts that do not need them, enforce least-privilege custom roles, and require MFA on all privileged users - the trade-off is operational friction for site administrators and possible breakage of workflows that assume admin capability. If the plugin's membership features are not actively required, deactivating or removing it eliminates the attack surface entirely, at the cost of losing that functionality. An application-layer or WAF rule matching SQL-injection patterns against the plugin's request paths adds a detection/blocking layer, but expect false positives on legitimate form and profile submissions and treat it as defense in depth, not a fix. Finally, log and alert on database errors, anomalous query timing and unusual read volume from privileged accounts, since blind SQL injection typically manifests as repeated suspicious requests rather than a single obvious payload, and rotate any credentials or tokens that may have been exposed if compromise is suspected.

Affected VersionsENISA

Ultimate Member 0 ≤2.13.1

Affected Packages

euvd ultimate_member 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 issue is a CWE-89 improper neutralization of special elements in an SQL command inside Ultimate Member, a widely deployed WordPress membership/user-profile plugin. Affected input reaches a database query without adequate parameterization or escaping, so attacker-controlled fragments are concatenated into SQL. Because the injection is blind, an attacker cannot simply dump results in the response; instead they must infer data through boolean- or time-based side channels, querying character by character - slower, but still capable of extracting user records, password hashes, session/token data and other WordPress or plugin tables consistent with the assessed high confidentiality impact (C:H, I:N, A:L). The provided CPE cpe:2.3:a:ultimate_member:ultimate_member:*:*:*:*:*:*:*:* uses wildcard versioning, so any installation of the plugin is in scope for version fingerprinting rather than a precise single build. The assessed vector is CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L; the vendor/reporter-submitted vector is identical except for Scope, which it records as Changed (S:C) rather than Unchanged. That difference alters the numeric score (7.6 vs. the lower Unchanged-scope equivalent) but not the practical exploitation picture: a remote, low-complexity, low-effort attack gated behind a high-privilege authenticated account.

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Severity by source

Vendor (Patchstack) PRIMARY 7.6 HIGH
AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
vuln.today AI 5.5 MEDIUM

Network-reachable low-complexity SQLi but gated behind high-privilege access (PR:H); blind read gives C:H, no confirmed writes (I:N), heavy queries give A:L; I assess S:U as DB shares the app's security authority.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

DescriptionCVE.org

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Ultimate Member Ultimate Member ultimate-member allows Blind SQL Injection.This issue affects Ultimate Member: from n/a through 2.13.1.

Executive ViewAI

Why It Matters

A blind SQL injection flaw in the Ultimate Member WordPress plugin (all versions up to and including 2.13.1) can allow a user holding administrator-level or equivalent plugin privileges to extract sensitive database contents gradually through inference. Because exploitation requires an already high-privileged account, the realistic business exposure is insider misuse or lateral movement following an admin credential compromise, meaning the data at risk includes the full WordPress database rather than a single site's front-end content. With no vendor patch currently identified, any organization running this plugin on internet-facing or shared-database WordPress environments should treat this as an elevated, unmitigated risk to data confidentiality.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: deactivate or remove Ultimate Member 2.13.1 and earlier where feasible; strictly limit and monitor administrator and equivalent Ultimate Member roles; enforce MFA and credential rotation for privileged accounts; deploy WAF or virtual patching rules filtering SQL metacharacters on plugin endpoints; segment the WordPress database from other applications and restrict database account privileges; enable database and plugin audit logging with alerting for anomalous query or admin session activity.

Threat Intelligence Overview

EPSS Score
0.3%
Top 82% exploitable
Prevalence
Medium
popular WordPress membership/user-profile plugin, large but not ubiquitous footprint
Social Media
1
Sightings
Data Quality
4 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 0.3%
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
Medium
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.

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