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CVE-2026-66478 – Unauthenticated SQL Injection – Church Admin WordPress Plugin (<= 5.1.1)

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Summary

CVE-2026-66478 is an unauthenticated SQL injection vulnerability in the Church Admin WordPress plugin, affecting versions up to and including 5.1.1. The flaw allows a remote, unauthenticated attacker to inject malicious SQL through the plugin’s sermon-related functionality. It carries a CVSS v3.1 base score of 9.3 (Critical).

Technical details

  • Root cause: improper neutralization of special elements in an SQL command (CWE-89) within the plugin’s sermon-related database query handling.
  • Trigger conditions: no authentication or user interaction is required to reach the vulnerable code path.
  • Attack vector: network-based, exploitable directly against the exposed WordPress site running the plugin.
  • Impact: attacker-controlled SQL injection can be used to extract data from the site’s database (blind SQL injection); availability impact is also noted, while integrity is unaffected.

Affected software

  • Church Admin WordPress plugin, versions <= 5.1.1

Severity

  • CVSS v3.1 Base Score: 9.3 (Critical)
  • Vector: 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 Church Admin plugin to version 5.1.2 or later, which patches the sermon-related SQL vulnerability.
  • If immediate patching is not possible: restrict or disable public access to the affected sermon-related functionality until the update can be applied, and monitor web server/database logs for anomalous query patterns indicative of SQL injection attempts.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Raw response body: /wp-content/plugins/church-admin/

References

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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.

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