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TI-2021-09238 Aliases CVE-2021-27903GHSA-x2j7-6hxm-87p3

An issue was discovered in Craft CMS before 3.6.7.

Priority MEDIUM 47CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-862 and CWE-94.

Summary

An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).

Why it matters now

EPSS 0.02819 86th percentileScored 2026-11-07
Fix Fixed craftcms/cms (Packagist): 3.6.7

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—craftcms/cms (Packagist)before 3.6.73.6.7Patch availableGHSA-x2j7-6hxm-87p3
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • craftcms/cms (Packagist) Vendor— Affected before 3.6.7 Fixed in 3.6.7 Patch available GHSA-x2j7-6hxm-87p3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*before 3.6.7VulnerableCraft CMS
  • cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions before 3.6.7 Vulnerable ·Craft CMS

Remediation

  • Fix · GHSA-x2j7-6hxm-87p3 craftcms/cms (Packagist) Fixed in 3.6.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27903
  2. 2026-10-03 Alias added: GHSA-x2j7-6hxm-87p3

References

Patch 1

Advisory 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