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TI-2026-20609 Aliases CVE-2026-25498GHSA-7jx7-3846-m7w7

Craft has a potential authenticated Remote Code Execution via malicious attached Behavior

Priority MEDIUM 41CWE-470Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

Craft is a platform for creating digital experiences. In versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, a Remote Code Execution (RCE) vulnerability exists in Craft CMS where the assembleLayoutFromPost() function in src/services/Fields.php fails to sanitize user-supplied configuration data before passing it to Craft::createObject(). This allows authenticated administrators to inject malicious Yii2 behavior configurations that execute arbitrary system commands on the server. This vulnerability represents an unpatched variant of the behavior injection vulnerability addressed in CVE-2025-68455, affecting different endpoints through a separate code path. This vulnerability is fixed in 5.8.22.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.011 65th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed cms (craftcms): 5.8.22, 4.16.18craftcms/cms (Packagist): 5.8.22, 4.16.18

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Craft CMScms5.0.0-RC1 to before 5.8.22; 4.0.0-RC1 to before 4.16.185.8.22, 4.16.18Patch availableCNA
—craftcms/cms (Packagist)5.0.0-RC1 to before 5.8.225.8.22Patch availableGHSA-7jx7-3846-m7w7
—craftcms/cms (Packagist)4.0.0-RC1 to before 4.16.184.16.18Patch availableGHSA-7jx7-3846-m7w7
  • cms VendorCraft CMS Affected 5.0.0-RC1 to before 5.8.22; 4.0.0-RC1 to before 4.16.18 Fixed in 5.8.22, 4.16.18 Patch available CNA
  • craftcms/cms (Packagist) Vendor— Affected 5.0.0-RC1 to before 5.8.22 Fixed in 5.8.22 Patch available GHSA-7jx7-3846-m7w7
  • craftcms/cms (Packagist) Vendor— Affected 4.0.0-RC1 to before 4.16.18 Fixed in 4.16.18 Patch available GHSA-7jx7-3846-m7w7

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*after 4.0.0, before 4.16.18; after 5.0.0, before 5.8.22VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*4.0.0VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*4.0.0 rc1VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*4.0.0 rc2VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*4.0.0 rc3VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*5.0.0VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*5.0.0 rc1VulnerableCraft CMS
  • cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions after 4.0.0, before 4.16.18; after 5.0.0, before 5.8.22 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:* Versions 4.0.0 rc1 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:* Versions 4.0.0 rc2 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:* Versions 4.0.0 rc3 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:* Versions 5.0.0 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:* Versions 5.0.0 rc1 Vulnerable ·Craft CMS

Remediation

  • Fix · CNA cms (craftcms) Fixed in 5.8.22, 4.16.18
  • Fix · GHSA-7jx7-3846-m7w7 craftcms/cms (Packagist) Fixed in 5.8.22 Advisory →
  • Fix · GHSA-7jx7-3846-m7w7 craftcms/cms (Packagist) Fixed in 4.16.18 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25498
  2. 2026-10-03 Alias added: GHSA-7jx7-3846-m7w7

References

Exploit 1

Patch 1

Advisory 1

Other 3

  • TI-2025-23503 Craft CMS Allows Remote Code Execution KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-37138 RCE when PHP `register_argc_argv` config setting is enabled in craftcms/cms KEVCVSS 4.0CRITICAL 9.3
  • TI-2025-16994 Potential RCE with a compromised security key in craft/cms KEVCVSS 3.1HIGH 8.1
  • TI-2025-24595 Craft CMS stores user-provided content in session files KEVCVSS 4.0MEDIUM 6.9
  • TI-2023-22284 Craft CMS Remote Code Execution vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2024-25171 Craft CMS up to v3.7.31 was discovered to contain a SQL injection vulnerability via the GraphQL API endpoint. CVSS 3.1CRITICAL 9.8
See all 96 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences