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TI-2026-71124 Aliases CVE-2026-109308GHSA-r8mr-vm79-xxh4

Craft CMS behavior injection enables remote code execution

Priority MEDIUM 40CWE-94Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 passes the raw updates request parameter to a model without cleansing, which lets users inject behaviors and event handlers (CWE-94). An authenticated control panel user with the performUpdates permission or Updates utility access can supply a crafted behavior to execute arbitrary code.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 passes the raw 'updates' request parameter in AppController::actionCacheUpdates to UpdatesModel without Component::cleanseConfig(), allowing behavior and event-handler injection. Authenticated control panel users with the performUpdates permission or Updates-utility access can supply 'as' or 'on' keys, such as an AttributeTypecastBehavior gadget, to execute arbitrary code.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0049 42nd percentileScored 2026-11-07
Fix Fixed cms (craftcms): 4.18.7, 5.10.14

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 CMScms4.0.0 to before 4.18.74.18.7Patch availableCNA
Craft CMScms5.0.0 to before 5.10.145.10.14Patch availableCNA
  • cms VendorCraft CMS Affected 4.0.0 to before 4.18.7 Fixed in 4.18.7 Patch available CNA
  • cms VendorCraft CMS Affected 5.0.0 to before 5.10.14 Fixed in 5.10.14 Patch available CNA

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

Upgrade Craft CMS 4 to version 4.18.7 and Craft CMS 5 to version 5.10.14.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA cms (craftcms) Fixed in 4.18.7
  • Fix · CNA cms (craftcms) Fixed in 5.10.14

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    craftcms cms 5.10.14

    5 records Highest priority Priority MEDIUM 2 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-71121 Twig sandbox bypass in Craft CMS allows code execution via has somePriority MEDIUM 40
    • TI-2026-71120 Arbitrary file read in Craft CMS through Twig create() DOMDocumentPriority LOW 30
    • TI-2026-71122 Missing authorization in Craft CMS lets users downgrade site editionPriority LOW 26
    Show all 5 records →
  • Release ·

    craftcms cms 4.18.7

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-71120 Arbitrary file read in Craft CMS through Twig create() DOMDocumentPriority LOW 30
    Show all 2 records →

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109308
  2. 2026-10-12 Alias added: GHSA-r8mr-vm79-xxh4
  3. 2026-10-13 CISA SSVC decision points changed
  4. 2026-10-13 Priority changed: MEDIUM → LOW
  5. 2026-10-13 Priority changed: LOW → MEDIUM

References

Advisory 1

  • 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