CVE-2026-28695CWE-1336

Craft affected by authenticated RCE via Twig SSTI - create() function + Symfony Process gadget

High · published March 4, 2026

CVSS v4.0
7.5
EPSS
1%
Percentile
50.4
In the wild
Unconfirmed
What it is

Craft is a content management system (CMS). 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. The create() Twig function exposes Craft::createObject(), which allows instantiation of arbitrary PHP classes with constructor arguments. Combined with the bundled symfony/process dependency, this enables RCE. This bypasses the fix implemented for CVE-2025-57811 (patched in 5.8.7). This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.

The record
Technical detail
CVSS v4.0
7.5 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00647 · 50.4th percentile
Weakness
CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine
Published
2026-03-04T16:15Z
EPSS history
Timeline
  • 04 MAR 16:15Z
    Craft affected by authenticated RCE via Twig SSTI - create() function + Symfony Process gadget
    cvelistv5