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TI-2026-22979 Aliases CVE-2026-28784GHSA-qc86-q28f-ggww

Craft is affected by potential authenticated Remote Code Execution via Twig SSTI

Priority MEDIUM 40CWE-1336Published · Updated

Key facts

Attack vector
Network
Privileges required
High
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 and GitHub. Impact type from CWE-1336.

Summary

Craft is a content management system (CMS). Prior to 5.8.22 and 4.16.18, it is possible to craft a malicious payload using the Twig map filter in text fields that accept Twig input under Settings in the Craft control panel or using the System Messages utility, which could lead to a RCE. For this to work, you must have administrator access to the Craft Control Panel, and allowAdminChanges must be enabled for this to work, which is against our recommendations for any non-dev environment. Alternatively, you can have a non-administrator account with allowAdminChanges disabled, but you have access to the System Messages utility. Users should update to the patched versions (5.8.22 and 4.16.18) to mitigate the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00588 48th percentileScored 2026-11-07
Fix Fixed cms (craftcms): 5.9.0-beta.1, 4.17.0-beta.1craftcms/cms (Packagist): 5.9.0-beta.1, 4.17.0-beta.1

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 CMScms5.0.0-RC1 to before 5.9.0-beta.1; 4.0.0-RC1 to before 4.17.0-beta.15.9.0-beta.1, 4.17.0-beta.1Patch availableCNA
—craftcms/cms (Packagist)5.0.0-RC1 to before 5.9.0-beta.15.9.0-beta.1Patch availableGHSA-qc86-q28f-ggww
—craftcms/cms (Packagist)4.0.0-RC1 to before 4.17.0-beta.14.17.0-beta.1Patch availableGHSA-qc86-q28f-ggww
  • cms VendorCraft CMS Affected 5.0.0-RC1 to before 5.9.0-beta.1; 4.0.0-RC1 to before 4.17.0-beta.1 Fixed in 5.9.0-beta.1, 4.17.0-beta.1 Patch available CNA
  • craftcms/cms (Packagist) Vendor— Affected 5.0.0-RC1 to before 5.9.0-beta.1 Fixed in 5.9.0-beta.1 Patch available GHSA-qc86-q28f-ggww
  • craftcms/cms (Packagist) Vendor— Affected 4.0.0-RC1 to before 4.17.0-beta.1 Fixed in 4.17.0-beta.1 Patch available GHSA-qc86-q28f-ggww

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*after 4.0.0, before 4.17.0; after 5.0.0, before 5.9.0VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*4.0.0VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*4.0.0 rc1VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*4.0.0 rc2VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*4.0.0 rc3VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*5.0.0VulnerableCraft CMS
cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*5.0.0 rc1VulnerableCraft CMS
  • cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions after 4.0.0, before 4.17.0; after 5.0.0, before 5.9.0 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:* Versions 4.0.0 rc1 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:* Versions 4.0.0 rc2 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:* Versions 4.0.0 rc3 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:* Versions 5.0.0 Vulnerable ·Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:* Versions 5.0.0 rc1 Vulnerable ·Craft CMS

Remediation

  • Fix · CNA cms (craftcms) Fixed in 5.9.0-beta.1, 4.17.0-beta.1
  • Fix · GHSA-qc86-q28f-ggww craftcms/cms (Packagist) Fixed in 5.9.0-beta.1 Advisory →
  • Fix · GHSA-qc86-q28f-ggww craftcms/cms (Packagist) Fixed in 4.17.0-beta.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-28784
  2. 2026-10-03 Alias added: GHSA-qc86-q28f-ggww
  3. 2026-10-14 EPSS moved to the 50th–90th percentile
  4. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 2

Advisory 1

Other 2

  • 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