Mapster WP Maps <= 1.23.0 - Authenticated (Subscriber+) Arbitrary User Meta Write via 'acf-photo-gallery-groups' Parameter

8.8
Improper Input Validation
CVE CVE-2026-12954
CVSS 8.8 (High)
Publicly Published September 17, 2026
Last Updated September 18, 2026
Researcher Wordfence PRISM - Wordfence

Description

The Mapster WP Maps plugin for WordPress is vulnerable to Arbitrary User Meta Write in all versions up to, and including, 1.23.0 via the `my_profile_update()` function. This is due to the function performing no nonce verification, no capability check, and no allowlist validation on the meta key supplied via the `acf-photo-gallery-groups` POST parameter before passing both the meta key and its corresponding value directly to `update_user_meta()`. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary user meta values, though privilege escalation is not possible.

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Vulnerability Details for Mapster WP Maps

Software Type Plugin
Software Slug mapster-wp-maps (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.24.0, or a newer patched version
Affected Version
  • <= 1.23.0
Patched Version
  • 1.24.0

Recent vulnerabilities in Mapster WP Maps

# Title CVE ID CVSS Researchers Date
1 Mapster WP Maps <= 2.0.4 - Unauthenticated Stored Cross-Site Scripting CVE-2026-39720 7.2 Ananda Dhakal October 5, 2026
2 Mapster WP Maps < 1.24.0 - Unauthenticated Information Exposure CVE-2026-14839 5.3 Alexander Jurkschat August 1, 2026
3 Freemius <= 2.10.1 - Reflected DOM-Based Cross-Site Scripting via url Parameter CVE-2024-13362 6.1 Asaf Mozes April 30, 2026
4 Mapster WP Maps <= 1.20.0 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2025-9044 6.4 zer0gh0st September 25, 2025
5 Mapster WP Maps <= 1.6.0 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-10592 6.4 Akbar Kustirama November 15, 2024
6 Mapster WP Maps <= 1.5.0 - Incorrect Authorization to Authenticated (Contributor+) Arbitrary Options Update CVE-2024-9235 8.8 Sean Murphy October 24, 2024
7 Mapster WP Maps <= 1.2.38 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-21744 6.4 Abu Hurayra (HurayraIIT) January 5, 2024

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