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CVE-2026-59527 – Unauthenticated SQL Injection – MapSVG WordPress Plugin <= 8.14.0

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Summary

CVE-2026-59527 is a critical unauthenticated SQL injection vulnerability in the MapSVG WordPress plugin (by RomanCode), affecting all versions up to and including 8.14.0. Classified as CWE-89 (Improper Neutralization of Special Elements in SQL Commands), it carries a CVSS v3.1 score of 9.3 and requires no credentials or user interaction to exploit. Organizations running the MapSVG plugin on internet-facing WordPress sites should treat this as a priority patching event.

Technical details

  • Root cause: Insufficient input sanitization in the plugin’s REST API endpoints — specifically the post-type and distinct-value endpoints — which fail to properly prepare SQL queries before execution, enabling arbitrary SQL injection.
  • Trigger conditions: Any unauthenticated network request targeting the vulnerable REST API endpoints; no authentication, no user interaction, and no elevated privileges are required.
  • Attack vector: Remotely exploitable over the network (AV:N/AC:L/PR:N/UI:N); accessible to any internet-connected attacker without prior access to the WordPress site.
  • Impact: Successful exploitation allows an unauthenticated attacker to directly interact with the underlying WordPress database, including extracting sensitive data. The CVSS Scope is Changed (S:C) with High Confidentiality impact (C:H), indicating the vulnerability’s impact crosses the security scope of the plugin component into the broader database. Availability impact is rated Low (A:L).

Affected software

  • MapSVG WordPress Plugin (Lite – Interactive Vector Maps) by RomanCode — all versions <= 8.14.0
  • Both the free (Lite) edition available on WordPress.org and the commercial (Premium) edition are affected.

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 action — patch now: Upgrade the MapSVG plugin to version 8.14.1 or later. Version 8.14.1 (released July 15, 2026) explicitly hardens the REST API post-type and distinct-value endpoints against SQL injection. The current latest version is 8.15.0.
  • If immediate patching is not possible: Restrict external access to the WordPress REST API at the network or WAF level as a temporary measure, and prioritize patching at the earliest maintenance window.
  • Verify exposure: Confirm which sites in your environment run the MapSVG plugin (detectable via static file paths under /wp-content/plugins/mapsvg/) and validate that the installed version is 8.14.1 or higher.

IONIX Status

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

References

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