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Affiliates Manager EUVDEUVD-2026-60780

| CVE-2026-73355 CRITICAL
SQL Injection (CWE-89)
2026-08-18 Patchstack GHSA-m6xp-8r2q-w62h
9.3
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
    Identify site running Affiliates Manager ≤2.9.53
  2. Delivery
    Send crafted affiliate parameter with SQL payload
  3. Exploit
    Trigger unsanitized $wpdb query (CWE-89)
  4. Execution
    Extract wp_users hashes and secrets
  5. Impact
    Escalate to admin/site compromise

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

Exploitation requires only that a site have the Affiliates Manager plugin (≤ 2.9.53) installed and active with its affiliate-facing request handling reachable over the network; per CVSS AV:N/AC:L/PR:N/UI:N no authentication, user interaction, or non-default configuration is needed, so default installations exposing the affiliate/registration endpoints are directly exploitable by unauthenticated remote attackers. Limiting factors: the site must actually have the vulnerable plugin installed and the specific vulnerable endpoint/parameter must be accessible (not blocked by a WAF, access control, or a disabled affiliate feature); if public affiliate functionality is disabled or the plugin is deactivated, the attack surface is removed.

Impact

Signals are largely consistent and point to a genuine priority for exposed sites: CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N yields network, low-complexity, unauthenticated, no-user-interaction exploitation, and the scope change (S:C) plus C:H reflect meaningful cross-boundary data exposure. However, several confidence-limiting gaps exist: no EPSS score was provided, so probabilistic exploitation likelihood cannot be quantified; there is no KEV listing and no evidence of a public POC, so this is currently a high-severity finding without confirmed exploitation. The supplied vector rates I:N and A:L, which is somewhat atypical for SQLi (many SQLi flaws carry integrity/availability impact); this suggests Patchstack assessed the injection as read/blind-oriented rather than allowing writes - treat integrity impact as unconfirmed rather than assuming full write capability. Overall this is a real, actionable high-priority issue for any internet-facing WordPress site running the plugin, not a paper-tiger high-CVSS finding, but exploitation is inferred-feasible rather than observed.

Exploit ScenarioDerived

A remote attacker with no account crafts a malicious value in an affiliate-facing parameter (e.g., a referral or registration field) that is concatenated into a backend SQL query, then uses UNION-based or blind injection to read arbitrary tables. From there they exfiltrate wp_users password hashes, secret keys, and affiliate payout/PII data, potentially leading to admin account compromise. No public POC is currently identified, but the AV:N/AC:L/PR:N profile makes reliable automated exploitation straightforward once the vulnerable parameter is known.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 18, 2026

Unauthenticated SQL injection in the WordPress plugin Affiliates Manager (by wp.insider) through version 2.9.53 lets remote attackers inject crafted SQL through affiliate-facing input without any authentication (PR:N), enabling extraction of sensitive database contents such as user records, affiliate payout data, and WordPress secrets. The high CVSS base score of 9.3 is driven by network reach, low complexity, and a scope change (S:C) reflecting impact on the wider WordPress database beyond the plugin's own tables. No public exploit identified at time of analysis, and the flaw is not listed in CISA KEV, but SQLi in a public-facing WordPress plugin is a well-understood and easily weaponized class.

RemediationAI

No vendor-released patch version is identified in the provided data, so confirm the fixed release directly via the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/affiliates-manager/vulnerability/wordpress-affiliates-manager-plugin-2-9-53-sql-injection-vulnerability) and upgrade to the first release above 2.9.53 once published. Until a patched version is confirmed and applied, apply compensating controls: deploy a WAF rule (e.g., Patchstack, Wordfence, or generic SQLi signatures) to filter injection payloads on the plugin's affiliate/registration request parameters, accepting that WAF rules can be bypassed and may cause false positives on legitimate affiliate submissions; restrict or temporarily disable public affiliate registration/lookup endpoints if the affiliate program is not actively in use, at the cost of blocking new affiliate signups; and restrict the WordPress database user's privileges to the minimum required, which limits blast radius but does not close the read-based data exposure. Deactivating the plugin entirely removes the risk but disables affiliate tracking and payouts.

Affected VersionsENISA

Affiliates Manager n/a ≤2.9.53

Affected Packages

euvd affiliates_manager 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 affected component is the Affiliates Manager plugin (CPE cpe:2.3:a:wp.insider:affiliates_manager) for WordPress, which manages affiliate registration, referral tracking, and commission payouts. The root cause is CWE-89 (Improper Neutralization of Special Elements used in an SQL Command): user-controllable input reaches a SQL query without proper parameterization or sanitization, likely via WordPress's $wpdb interface where a value is concatenated into a query rather than passed through $wpdb->prepare(). Because the plugin exposes affiliate/registration functionality to unauthenticated visitors, the vulnerable code path is reachable pre-authentication, and injected SQL executes with the database privileges of the WordPress DB user - typically full read access to the entire wp_ database, not just plugin tables.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Patchstack) PRIMARY 9.3 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
vuln.today AI 8.6 HIGH

Unauthenticated network SQLi (AV:N/AC:L/PR:N/UI:N) reading beyond the plugin's own tables justifies S:C and C:H; no confirmed write/integrity or availability impact, so I:N/A:N.

3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/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
Changed
Confidentiality
High
Integrity
None
Availability
Low

DescriptionCVE.org

Unauthenticated SQL Injection in Affiliates Manager <= 2.9.53 versions.

Executive ViewAI

Why It Matters

The Affiliates Manager WordPress plugin (through v2.9.53) contains a critical unauthenticated SQL injection vulnerability enabling remote attackers to extract sensitive database contents including user records, affiliate payment data, and WordPress configuration secrets without authentication. No public exploit has been identified at time of analysis, though SQL injection in public-facing WordPress plugins is a well-understood, easily exploitable vulnerability class. No vendor-released patch identified at time of analysis, creating urgent remediation pressure for affected organizations.

Business Impact: High
Compensating Controls

Web Application Firewall rules blocking SQL injection patterns on affiliate endpoints; database-level access controls restricting plugin database user to minimum required permissions and blocking access to sensitive tables (wp_users, wp_usermeta); comprehensive query logging with real-time alerts for suspicious SQL patterns; network segmentation limiting database access to authorized applications; complete plugin disabling if affiliate functionality is non-critical. Note: These interim mitigations reduce but do not eliminate risk pending vendor patch or plugin replacement.

Threat Intelligence Overview

EPSS Score
0.4%
Top 68% exploitable
Prevalence
Medium
moderately popular WordPress affiliate plugin, tens of thousands of installs, not ubiquitous
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 0.4%
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
Partial

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +46
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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