Open-Source Security Intelligence

Know every vulnerability
before it knows you.

DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.

Check if your repositories are affected!View on GitHub
Search

GHSA-265m-7826-wjqm

HighCVSS 8.7 / 10
Published Aug 6, 2026·Last modified Aug 6, 2026
Affected Components(2)
Packagist logocraftcms/cms
4.0.0-RC1 – 4.18.2
Packagist logocraftcms/cms
5.0.0-RC1 – 5.10.6
Description

Craft CMS has an authenticated remote code execution issue in the control panel element-search condition handling.

Craft cleans the outer request-controlled condition array with Component::cleanseConfig(), but Conditions::createCondition() later decodes and merges the JSON string in condition.config without re-running cleanseConfig() on the decoded/merged configuration.

Because condition.config is a JSON string during the first cleanse, Yii special config keys such as as ... and on ... can be hidden inside it. After JSON decoding, those keys reach FieldLayout object creation and are interpreted by Yii as behavior/event configuration.

The RCE is semi-blind: the trigger endpoint returns a normal JSON response, and the command output is verified via a server-side file-write side effect retrieved in a subsequent request.

Preconditions

  • The attacker needs an authenticated Craft control panel session.
  • A valid CSRF token is required.

Impact

An authenticated control panel user can inject Yii behavior/event configuration after Craft’s intended config cleanse boundary. In the confirmed local lab, this led to command execution as the PHP/web user.

Potential attacker impact:

  • Execute operating system commands as the PHP/web user.
  • Read Craft secrets, environment variables, and application configuration.
  • Access database credentials and stored site content.
  • Modify site content, users, and application state.
  • Pivot to internal services reachable from the Craft host or container.
  • Cause denial of service or establish persistence depending on deployment permissions.
Upload your SBOM

Upload your own SBOM in CycloneDX 1.6 or higher (JSON) directly here to check your vulnerabilities.

Risk Scores
Base Score
8.7

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
6.3

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • CVE-2026-72778
    Alias
  • EUVD-2026-56102
    Alias

Browse More

High severity
Scan your project

Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.

Checkout DevGuard