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TI-2026-40746 Aliases CVE-2026-56383GHSA-6j87-m5qx-9fqp

Craft CMS - Stored XSS in Table Field via Row Heading Column Type

Priority MEDIUM 54CWE-79Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Craft CMS contains a stored cross-site scripting (XSS) vulnerability in the editableTable.twig component when using the 'Row Heading' column type. The application fails to sanitize input within row heading default values, allowing an attacker with an administrator account (with allowAdminChanges enabled) to inject arbitrary JavaScript that executes when another user views a page containing the affected table field. Affected versions are >= 4.5.0-beta.1 through 4.16.18 and >= 5.0.0-RC1 through 5.8.22; fixed in 4.16.19 and 5.8.23.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00218 12th percentileScored 2026-11-07
Fix Fixed cms (craftcms): 4.16.19, 5.8.23craftcms/cms (Packagist): 4.16.19, 5.8.23

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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 CMScms4.5.0-beta.1 to before 4.16.19; 5.0.0-RC1 to before 5.8.234.16.19, 5.8.23Patch availableCNA
—craftcms/cms (Packagist)4.5.0-beta.1 to before 4.16.194.16.19Patch availableGHSA-6j87-m5qx-9fqp
—craftcms/cms (Packagist)5.0.0-RC1 to before 5.8.235.8.23Patch availableGHSA-6j87-m5qx-9fqp
  • cms VendorCraft CMS Affected 4.5.0-beta.1 to before 4.16.19; 5.0.0-RC1 to before 5.8.23 Fixed in 4.16.19, 5.8.23 Patch available CNA
  • craftcms/cms (Packagist) Vendor— Affected 4.5.0-beta.1 to before 4.16.19 Fixed in 4.16.19 Patch available GHSA-6j87-m5qx-9fqp
  • craftcms/cms (Packagist) Vendor— Affected 5.0.0-RC1 to before 5.8.23 Fixed in 5.8.23 Patch available GHSA-6j87-m5qx-9fqp

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*——Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions — — ·Craft CMS

Remediation

  • Fix · CNA cms (craftcms) Fixed in 4.16.19, 5.8.23
  • Fix · GHSA-6j87-m5qx-9fqp craftcms/cms (Packagist) Fixed in 4.16.19 Advisory →
  • Fix · GHSA-6j87-m5qx-9fqp craftcms/cms (Packagist) Fixed in 5.8.23 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56383
  2. 2026-10-03 Alias added: GHSA-6j87-m5qx-9fqp

References

Patch 1

Advisory 2

Other 4

  • 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 203 →

Sources

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