Cyber Resilience

CVE-2026-39475

High

Published: 08 April 2026

Published
08 April 2026
Modified
24 April 2026
KEV Added
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Patch
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CVSS Score v3.1 8.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
EPSS Score 0.0026 17.6th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-39475 is a high-severity SQL Injection (CWE-89) vulnerability. Its CVSS base score is 8.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 17.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-39475 is an Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability, classified under CWE-89, that enables Blind SQL Injection in the Syed Balkhi User Feedback plugin (userfeedback-lite) for WordPress. This flaw affects all versions of the plugin from n/a through 1.10.1, as documented in the CVE published on 2026-04-08.

The vulnerability carries a CVSS v3.1 base score of 8.5 (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L), indicating exploitation is feasible over the network with low attack complexity, requiring only low privileges such as those of a subscribed or contributor-level WordPress user, and no user interaction. Attackers can achieve high confidentiality impact by extracting sensitive data through blind SQL injection techniques, with low impacts on integrity and availability, while the exploit crosses security scopes due to the plugin's backend interactions.

Patchstack's advisory at https://patchstack.com/database/Wordpress/Plugin/userfeedback-lite/vulnerability/wordpress-user-feedback-plugin-1-10-1-sql-injection-vulnerability-2?_s_id=cve details the vulnerability in the User Feedback plugin version 1.10.1, highlighting the need for updates to versions beyond 1.10.1 to mitigate the SQL injection risk.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Syed Balkhi User Feedback userfeedback-lite allows Blind SQL Injection.This issue affects User Feedback: from n/a through <= 1.10.1.

CWE(s)
CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

SQL injection vulnerability in public-facing WordPress plugin directly enables T1190 by allowing authenticated low-privilege users to exploit the web application for sensitive data extraction from the database.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-24956Shared CWE-89
CVE-2026-33615Shared CWE-89
CVE-2025-28939Shared CWE-89
CVE-2021-47872Shared CWE-89
CVE-2025-28873Shared CWE-89
CVE-2019-25636Shared CWE-89
CVE-2026-32611Shared CWE-89
CVE-2026-42755Shared CWE-89
CVE-2024-53544Shared CWE-89
CVE-2026-21410Shared CWE-89

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly prevents blind SQL injection by enforcing validation of user inputs used in SQL commands within the vulnerable WordPress plugin.

SI-2 Flaw Remediation good match
prevent

Mitigates the CVE by requiring timely identification, reporting, and patching of the SQL injection flaw in User Feedback plugin versions up to 1.10.1.

RA-5 Vulnerability Monitoring and Scanning partial match
detect

Enables detection of SQL injection vulnerabilities like CVE-2026-39475 through regular automated vulnerability scanning of web applications and plugins.

References