CVE-2026-28695: Craft CMS Vulnerable to Authenticated RCE via Twig SSTI - create() function + Symfony Process gadget

March 3, 2026 (updated March 4, 2026)

There is an authenticated admin RCE in Craft CMS 5.8.21 via Server-Side Template Injection using the create() Twig function combined with a Symfony Process gadget chain.

This bypasses the fix implemented for CVE-2025-57811 (patched in 5.8.7).

References

github.com/advisories/GHSA-94rc-cqvm-m4pw
github.com/craftcms/cms
github.com/craftcms/cms/commit/e31e50849ad71638e11ea55fbd1ed90ae8f8f6e0
github.com/craftcms/cms/security/advisories/GHSA-94rc-cqvm-m4pw
nvd.nist.gov/vuln/detail/CVE-2026-28695

Code Behaviors & Features

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