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TI-2021-09237 Aliases CVE-2021-27902GHSA-3jxh-789f-p7m6

An issue was discovered in Craft CMS before 3.6.0.

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

An issue was discovered in Craft CMS before 3.6.0. In some circumstances, a potential XSS vulnerability existed in connection with front-end forms that accepted user uploads.

Why it matters now

EPSS 0.00987 62nd percentileScored 2026-11-07
Fix Fixed craftcms/cms (Packagist): 3.6.0

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 3.6.03.6.0Patch availableGHSA-3jxh-789f-p7m6
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • craftcms/cms (Packagist) Vendor— Affected before 3.6.0 Fixed in 3.6.0 Patch available GHSA-3jxh-789f-p7m6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*before 3.6.0VulnerableCraft CMS
  • cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions before 3.6.0 Vulnerable ·Craft CMS

Remediation

  • Fix · GHSA-3jxh-789f-p7m6 craftcms/cms (Packagist) Fixed in 3.6.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27902
  2. 2026-10-03 Alias added: GHSA-3jxh-789f-p7m6

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