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CVE-2026-12954— Mapster WP Maps <= 1.23.0 - Authenticated (Subscriber+) Arbitrary User Meta Write via 'acf-photo-gallery-groups' Parameter

Quick assessment

Affected
mapster Mapster WP Maps
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 function. This is due to the function performing no nonce verification, no capability check, and no allowlist validation on

CVSS 8.8 · High
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I. Basic Information for CVE-2026-12954

Vulnerability Information

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Vulnerability Title
Mapster WP Maps <= 1.23.0 - Authenticated (Subscriber+) Arbitrary User Meta Write via 'acf-photo-gallery-groups' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
mapster Mapster WP Maps 0 ~ 1.23.0 -

II. Public POCs for CVE-2026-12954

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III. Intelligence Information for CVE-2026-12954

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Other References for CVE-2026-12954 (5)

IV. Related Vulnerabilities

Same product: Mapster WP Maps
Same vendor: mapster
Same weakness: CWE-20

V. Comments for CVE-2026-12954

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