TI-2026-71122 Aliases CVE-2026-109306 GHSA-g9xf-4797-9phm

Missing authorization in Craft CMS lets users downgrade site edition

LOW 26CWE-862Published 2026-10-12 · Updated 2026-10-18

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Craft CMS from 5.0.0 before 5.10.14 has a missing authorization check (CWE-862) in the action that switches the installed edition. Any authenticated user, including low-privileged front-end users, can trigger the switch when the licensed edition does not match, which persistently downgrades the site edition in project config. Administrators cannot reverse this change from the control panel.

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

Description from the CNA

Craft CMS from 5.0.0 before 5.10.14 contains a missing authorization vulnerability in AppController::actionSwitchToLicensedEdition() that lets any authenticated user change the installed edition. Low-privileged front-end users can call the action route when the licensed edition mismatches to persistently downgrade the site edition in project config, which admins cannot reverse from the control panel.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00233 14th percentileScored 2026-11-07

Fix Fixed cms (craftcms): 5.10.14

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
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

Vendor	Product	Affected versions	Fixed in	Status	Source
Craft CMS	cms	5.0.0 to before 5.10.14	5.10.14	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.

CPE	Versions	Role	Vendor
cpe:2.3:a:craftcms:craft_cms::::::::	—	—	Craft CMS

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

Remediation

Update Craft CMS to version 5.10.14 or later, which fixes this issue. The sources list no advisory identifier for this fix.

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

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 · 2026-10-12
craftcms cms 5.10.14
5 records Highest priority Priority MEDIUM 2 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2026-71124 Craft CMS behavior injection enables remote code executionPriority MEDIUM 40
- 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
Show all 5 records →

Timeline

2026-10-12 Threatist record created from CVE-2026-109306
2026-10-12 Alias added: GHSA-g9xf-4797-9phm
2026-10-13 Priority changed: MEDIUM → LOW
2026-10-18 CISA SSVC decision points changed

References

Advisory 1

GitHub Security Advisory (GHSA-4wfw-q5w3-jh42)

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