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CVE-2026-18032 – Unauthenticated Information Disclosure – WP Data Access WordPress Plugin before 5.5

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Summary

CVE-2026-18032 is an unauthenticated information disclosure vulnerability (CWE-200) in the WP Data Access WordPress plugin in all versions before 5.5.79. The plugin fails to validate column names supplied to one of its unauthenticated AJAX actions, allowing a remote attacker to read arbitrary database columns — including user password hashes — without authentication. It carries a CVSS v3.1 base score of 7.5 (High).

Technical details

  • Root cause: The plugin does not validate the column names it accepts on one of its unauthenticated AJAX actions, and the nonce protecting the action does not cover the column name parameter.
  • Trigger conditions: An attacker sends a request to the vulnerable unauthenticated AJAX action specifying arbitrary database column names.
  • Attack vector: Network; the action is reachable by unauthenticated remote attackers (Attack Complexity Low, no privileges or user interaction required).
  • Impact: Disclosure of arbitrary database columns, including sensitive data such as user password hashes. Confidentiality impact is High; integrity and availability are not affected.

Affected software

  • WP Data Access WordPress plugin: all versions before 5.5.79.
  • Fixed in version 5.5.79.

Severity

  • CVSS v3.1 base score: 7.5 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Update the WP Data Access plugin to version 5.5.79 or later.
  • If no patch can be applied: Restrict access to the WordPress AJAX endpoint (admin-ajax.php) at the network or WAF layer, and consider disabling the plugin until it can be updated.

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 HTTP response body: wpdaApiSettings

References

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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.

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  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
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