Improper input validation in Mapster WP Maps
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
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 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12954
- 2026-10-03 Alias added: GHSA-gxqq-92xq-fjh7
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a70757f7-63a0-452a-a078-0fb7f82844b6?source=cve
- 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
- 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
- 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
- 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
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3611280%40mapster-wp-maps&new=3611280%40mapster-wp-maps
More mapster vulnerabilities
- TI-2024-08571 Mapster WP Maps <= 1.5.0 - Incorrect Authorization to Authenticated (Contributor+) Arbitrary Options Update CVSS 3.1HIGH 8.8
- TI-2026-82329 Unauthenticated stored cross-site scripting in Mapster WP Maps CVSS 3.1HIGH 7.2
- TI-2026-67933 Cross-site scripting in Mapster WP Maps WordPress plugin CVSS 3.1HIGH 7.1
- TI-2024-09814 Mapster WP Maps <= 1.6.0 - Authenticated (Contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4
- TI-2024-14430 WordPress Mapster WP Maps Plugin <= 1.2.38 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 6.5
- TI-2025-08288 Mapster WP Maps <= 1.20.0 - Authenticated (Contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4
Sources
- CVE-2026-12954 · CVE Program
- CVE-2026-12954 · NVD
- FIRST EPSS
- GHSA-gxqq-92xq-fjh7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences