8.6

CVE-2026-56382: craftcms cms Code Injection

CVSS: 8.6v4.0HighDeferred
Published 21-06-2026Last modified 22-06-2026
Open JSON

Vulnerability summary

CVE-2026-56382 is a high (CVSS 8.6) Code Injection vulnerability in craftcms cms. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 58.8% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v4.0 (CVE.org)
EPSS score
0.89%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 21-06-2026
    PublishedVulnerability first disclosed.
  2. 22-06-2026
    Last modifiedVulnerability information updated.

Description

Craft CMS (composer package craftcms/cms) versions >= 5.5.0 and <= 5.9.13 contain a remote code execution vulnerability in the FieldsController::actionRenderCardPreview() method, which passes the fieldLayoutConfig POST parameter directly to Fields::createLayout() without calling Component::cleanseConfig(). An authenticated admin user can inject Yii2 event handlers (e.g., 'on init' keys) via the fieldLayoutConfig parameter to execute arbitrary PHP code and disclose sensitive information (such as environment variables containing database credentials and CRAFT_SECURITY_KEY). The issue is fixed in version 5.9.14.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.89%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

0.00 pp

From 0.89% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.89%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Craftcms1 product
  • cms≥ 5.5.0, < 5.9.14

1 vendor · 1 product

References

2 links