Vulnerabilities / M Chart / WPSEC-2026-3124
M Chart <= 2.4 - Unauthenticated Sensitive Information Exposure via Password-Protected Charts
Medium 5.3
CWE-200Fixed in 2.4.1
- ID
- WPSEC-2026-3124
- Plugin
- M Chart (m-chart)
- Affected
- all versions before 2.4.1
- Remediation
- Update to 2.4.1 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness
- CWE-200
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-11-14
- Attack surface
- M Chart on WPSec AttackSurface
- Fix released
- Published
Description
The M Chart plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.4. The plugin ignores a chart's post password: the single chart page (the_content filter), the chart embed endpoint and the block REST endpoint /m-chart/v1/chart/<id> all render or return the chart without checking post_password_required(). This makes it possible for unauthenticated attackers to view the data, table and details of password-protected charts without knowing the password.
References
- https://wpsec.com/vuln/WPSEC-2026-3124/
- https://plugins.svn.wordpress.org/m-chart/tags/2.4.1/
- https://wordpress.org/plugins/m-chart/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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