CVE-2026-73183: Maps Marker Pro SQLi Vulnerability

CVE-2026-73183 Overview

CVE-2026-73183 is an unauthenticated SQL injection vulnerability affecting the Maps Marker Pro WordPress plugin in versions 4.32 and earlier. The flaw allows remote attackers to inject arbitrary SQL statements through the plugin without prior authentication. Successful exploitation can result in unauthorized read access to database contents and limited impact to service availability. The vulnerability is tracked under CWE-89, Improper Neutralization of Special Elements used in an SQL Command. Patchstack has published advisory details in the Patchstack WordPress Plugin Vulnerability database.

Critical Impact
Remote, unauthenticated attackers can inject SQL statements against WordPress sites running Maps Marker Pro <= 4.32, exposing database contents.

Affected Products

Maps Marker Pro WordPress plugin versions <= 4.32
WordPress sites with the vulnerable plugin installed and activated
Databases backing WordPress installations using Maps Marker Pro

Discovery Timeline

2026-08-19 - CVE-2026-73183 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-73183

Vulnerability Analysis

The vulnerability is a SQL injection flaw in the Maps Marker Pro plugin, categorized under CWE-89. User-supplied input reaches an SQL query without proper sanitization or parameterization. Because authentication is not required, any remote actor able to reach the WordPress site can attempt exploitation. The scope is marked as changed, indicating the injected query can impact resources outside the immediate vulnerable component, such as broader database contents shared with WordPress core.

The primary impact is confidentiality loss through unauthorized data reads. Integrity is not directly affected in the reported CVSS profile, and availability impact is limited. Sensitive WordPress data including user records, session artifacts, and administrative metadata is at risk of extraction.

Root Cause

The root cause is missing input validation and lack of prepared statements in one or more plugin request handlers. Attacker-controlled parameters are concatenated into SQL queries executed against the WordPress database. This allows syntax alteration of the intended query, enabling operators such as UNION SELECT or boolean-based conditions to extract data.

Attack Vector

Exploitation occurs over the network against publicly reachable WordPress endpoints exposed by the plugin. No credentials, tokens, or user interaction are required. An attacker sends crafted HTTP requests containing malicious payloads in parameters processed by the vulnerable plugin routes. Refer to the Patchstack advisory for parameter-level technical details.

No public proof-of-concept exploit code is listed in the enriched data for this CVE.

Detection Methods for CVE-2026-73183

Indicators of Compromise

HTTP requests to Maps Marker Pro plugin endpoints containing SQL metacharacters such as ', --, UNION, SELECT, or SLEEP(.
Unusual database query patterns or long-running queries originating from the WordPress web user against wp_users, wp_usermeta, or wp_options tables.
Web server access logs showing repeated requests to plugin routes with encoded payloads (%27, %20UNION%20).
Newly created administrator accounts or password hash reads correlated with suspicious plugin traffic.

Detection Strategies

Deploy a web application firewall (WAF) rule set that flags SQL injection signatures targeting the /wp-content/plugins/maps-marker-pro/ path.
Enable MySQL general or slow query logging temporarily to identify anomalous queries invoked from plugin handlers.
Compare installed plugin versions against 4.32 using WordPress inventory tooling and flag vulnerable hosts.

Monitoring Recommendations

Monitor outbound data volumes from the WordPress host for signs of bulk exfiltration following suspicious requests.
Alert on new privileged WordPress accounts and unexpected changes to wp_options values such as siteurl or admin_email.
Track EPSS scoring changes and vendor advisories to reassess exploitation likelihood as public exploits emerge.

How to Mitigate CVE-2026-73183

Immediate Actions Required

Identify all WordPress installations running Maps Marker Pro at version 4.32 or earlier and prioritize them for patching.
Update Maps Marker Pro to a fixed release as published by the vendor via the Patchstack advisory.
If a fixed version is not yet deployable, disable and deactivate the plugin until remediation is complete.
Rotate WordPress administrator credentials and secrets on any host that exhibited suspicious plugin traffic prior to patching.

Patch Information

The vendor has published fix guidance through Patchstack. Administrators should upgrade Maps Marker Pro to the latest available version above 4.32. Verify the installed version in the WordPress plugin management console after applying the update. Consult the Patchstack advisory for the specific fixed version reference.

Workarounds

Deactivate the Maps Marker Pro plugin until an update can be applied.
Restrict access to WordPress admin and plugin endpoints using IP allow-listing at the reverse proxy or WAF layer.
Deploy virtual patching rules through a managed WAF such as Patchstack, Wordfence, or Cloudflare to block SQL injection payloads targeting the plugin.
Apply the WordPress database user with least privilege, limiting operations to only those required by WordPress runtime.

bash

# Example WordPress CLI check for vulnerable Maps Marker Pro version
wp plugin get maps-marker-pro --field=version
wp plugin update maps-marker-pro
wp plugin deactivate maps-marker-pro   # if patched version not yet available