---
id: CVE-2026-12954
title: >-
  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
summary: >-
  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 cap…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-20
vendor: mapster
product: Mapster WP Maps
affected:
  - wp_maps <= 1.23.0
published: '2026-09-18'
updated: '2026-09-19'
sourceUpdated: '2026-09-19T15:16:58.133'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12954'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.21.0/includes/acf-photo-gallery-field/includes/acf_photo_gallery_save.php#L43
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.21.0/includes/acf-photo-gallery-field/includes/acf_photo_gallery_save.php#L47
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.23.0/includes/acf-photo-gallery-field/includes/acf_photo_gallery_save.php#L43
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.23.0/includes/acf-photo-gallery-field/includes/acf_photo_gallery_save.php#L47
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3611280%40mapster-wp-maps&new=3611280%40mapster-wp-maps
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/a70757f7-63a0-452a-a078-0fb7f82844b6?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.00456
epssPercentile: 0.37076
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-19T13:21:47.231767Z'
ingestedAt: '2026-09-18T08:38:04.098Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.