Is This vulnerability exploited in the wild?

No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

How severe is This vulnerability?

Medium severity, with a CVSS score of 4.3, published 6 July 2026.

Which products and versions are affected?

Craft CMS Craft CMS 4.0.0-RC1 to 4.18.0.1; 5.0.0-RC1 to 5.10.2.

Is there a fix for This vulnerability?

A patch was published on 2026-05-22: Patch released in versions 4.18.1 and 5.10.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is This vulnerability attacked?

It is attacked over the network, in a web application.

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Craft CMS authorization bypass in Charts Endpoint

Severity: medium · CVSS 4.3 · Published 2026-07-06

Craft CMS is a popular content management system used to build and manage websites. A vulnerability in its charting feature allows logged-in non-admin users to bypass authorization checks and view sensitive user registration metrics they should not have access to. While this does not allow data modification or system disruption, it exposes confidential analytics data that could inform attacks or expose business intelligence.

Quick answers

Is This vulnerability exploited in the wild?: No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.
How severe is This vulnerability?: Medium severity, with a CVSS score of 4.3, published 6 July 2026.
Which products and versions are affected?: Craft CMS Craft CMS 4.0.0-RC1 to 4.18.0.1; 5.0.0-RC1 to 5.10.2.
Is there a fix for This vulnerability?: A patch was published on 2026-05-22: Patch released in versions 4.18.1 and 5.10.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is This vulnerability attacked?: It is attacked over the network, in a web application.
Am I affected?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a missing authorization check (CWE-266) in the actionGetNewUsersData function within src/controllers/ChartsController.php. An authenticated non-admin control panel user can manipulate the userGroupId argument to bypass authorization logic and retrieve user registration metrics from arbitrary user groups. Attack vector is network-based over HTTP/HTTPS with low attack complexity, requiring only low privileges (a valid non-admin user account) and no user interaction. No integrity or availability impact; the attack results in confidentiality loss (unauthorized data disclosure). The issue is patched in Craft CMS 4.18.1 and 5.10.3, with fix committed as 9ee53efc1314e6aba32771c66a13e072a246f4ce.

Affected products

Craft CMS Craft CMS 4.0.0-RC1 to 4.18.0.1; 5.0.0-RC1 to 5.10.2

Timeline

2026-07-06: disclosed: Advisory published to GitHub Advisory Database
2026-05-22: patched: Patch released in versions 4.18.1 and 5.10.3
2026-08-31: other: Advisory withdrawn as duplicate of GHSA-rvmm-v933-jgxq

References

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