How severe is CVE-2026-14794?

No CVSS score has been assigned to CVE-2026-14794 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-14794?

CVE-2026-14794 affects the following packages: craftcms/cms (Packagist), craftcms/cms (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2026-14794?

Update craftcms/cms to 4.18.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-14794 is resolved across your whole dependency graph.

How do I detect CVE-2026-14794 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for craftcms/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-14794 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2026-14794 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-14794 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-14794?

CVE-2026-14794 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 31th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-14794?

CVE-2026-14794 is classified as CWE-266 (CWE-266), CWE-285 (CWE-285). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-14794 published, and has it been updated?

CVE-2026-14794 was published on July 6, 2026 and was last updated on August 31, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2026-14794 — cms

Fix: craftcms/cms@9ee53ef

CVE-2026-14794 is a CWE-266 vulnerability in craftcms/cms. A fix is available for craftcms/cms — see the affected versions and patch details below.

Craft CMS Charts Endpoint ChartsController.php actionGetNewUsersData improper authorization

Also known asGHSA-rvmm-v933-jgxq

Published

Jul 6, 2026

Updated

Aug 31, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Oct 17, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-14794.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs31th percentile — riskier than 31% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

2 pkgs affected

🐘craftcms/cms🐘craftcms/cms

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

ChartsController::actionGetNewUsersData() at /actions/charts/get-new-users-data is missing a requirePermission('viewUsers') authorization check. Any authenticated control panel user, regardless of permissions beyond accessCp, can POST to this endpoint to receive time-series user registration counts for the entire site or for an arbitrary user group ID.

The viewUsers permission is consistently required throughout the control panel before exposing user-related data, but this action enforces only the base accessCp check inherited from the framework.

Each call returns the total count of users who joined the specified group in the requested period.

Impact

Any control panel user with only accessCp permission can obtain the total number of registered users and their registration date distribution across any time window.

In installations with multiple editor roles, this allows a low-privilege control panel user to infer user group sizes and registration trends that would normally require the viewUsers permission to access.

No user PII (name, email, password) is disclosed; only aggregate counts and timestamps are returned. Confidentiality impact is low. No integrity or availability impact.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`craftcms/cms`	≥ 4.0.0-RC1&&< 4.18.1	4.18.1`composer require craftcms/cms:^4.18.1`
🐘Packagist	`craftcms/cms`	≥ 5.0.0-RC1&&< 5.10.3	5.10.3`composer require craftcms/cms:^5.10.3`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for craftcms/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update craftcms/cms to 4.18.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-14794 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

`ChartsController::actionGetNewUsersData()` at `/actions/charts/get-new-users-data` is missing a `requirePermission('viewUsers')` authorization check. Any authenticated control panel user, regardless of permissions beyond `accessCp`, can POST to this endpoint to receive time-series user registration counts for the entire site or for an arbitrary user group ID. The `viewUsers` permission is consistently required throughout the control panel before exposing user-related data, but this action enforces only the base `accessCp` check inherited from the framework. Each call returns the total count

O3 Security · Impact-Aware SCA

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