Live Exposure Defense: From CVE to Confirmed Exposure in 12 Hours – See more

Back
New CVE Detected

CVE-2026-42639 – Unauthenticated SQL Injection – GD Rating System WordPress Plugin ≤ 3.6.2

Be the first to know when new zero-days emerge:

Subscribe to Email Alerts
Subscribe to RSS Feed

Summary

CVE-2026-42639 is a critical unauthenticated SQL injection vulnerability (CWE-89) in the GD Rating System WordPress plugin, developed by Dev4Press, affecting all versions up to and including 3.6.2. The flaw enables any unauthenticated, network-accessible attacker to inject arbitrary SQL commands without any user interaction, earning a CVSS v3.1 base score of 9.3 (Critical). A patched version (3.7) has been released and site administrators running the affected plugin should update immediately.

Technical details

  • Root cause: Insufficient validation and sanitization of user-supplied input within the plugin’s SQL query-building logic, allowing SQL metacharacters to pass through to the underlying database layer without proper neutralization.
  • Trigger conditions: The vulnerability requires no authentication, no user account, and no user interaction — any unauthenticated remote actor can trigger the injection over a standard HTTP/HTTPS request.
  • Attack vector: Network-based (Attack Complexity: Low). No local access, special configuration, or race conditions are required to exploit the flaw.
  • Impact: The CVSS vector’s Scope: Changed and Confidentiality: High metrics indicate that exploitation can extract sensitive database contents — including WordPress user credentials and personal data — and that the impact may propagate to database-backed components beyond the vulnerable plugin itself. A Low availability impact is also present, reflecting potential disruption to normal site operation during exploitation.

Affected software

  • GD Rating System WordPress plugin by Dev4Press — all versions ≤ 3.6.2

Severity

  • CVSS v3.1 Base Score: 9.3 — Critical
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

Mitigation and recommended actions

  • Immediate: Update the GD Rating System plugin to version 3.7 or later (released April 27, 2026). The 3.7 changelog explicitly documents improvements to SQL query building and validation, and fixes for improper sanitization of input data.
  • If immediate patching is not feasible: Temporarily deactivate the plugin to eliminate the attack surface, or deploy web application firewall (WAF) rules to block SQL injection payloads targeting WordPress plugin endpoints.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report

How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
Close

Subscribe to Threat Center RSS

Copy/paste the link below into your preferred RSS reader or follow these instructions to subscribe to Slack alerts.

Open RSS feedSlack setup instructions

Close

Get Real-Time CVE Alerts to Your Email

Be the first to know when new zero-days emerge