What is CVE-2026-28695?

CVE-2026-28695 is a high-severity vulnerability in Craftcms Cms, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 7.2/10. Published 2026-03-04.

How severe is CVE-2026-28695?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Craftcms Cms

CVE-2026-28695

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.

EPSS: 0.006 (43.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Craftcms Cms — versions >= 5.8.7, < 5.9.0-beta.1, >= 4.0.0-RC1, < 4.17.0-beta.1
Craftcms Craft_cms — versions 4.0.0, 5.0.0

Weakness classification (CWE)

CWE-1336 — Improper Neutralization of Special Elements Used in a Template Engine

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-28695?: CVE-2026-28695 is a high-severity vulnerability in Craftcms Cms, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 7.2/10. Published 2026-03-04.
How severe is CVE-2026-28695?: High severity. CVSS v3 base score is 7.2 out of 10.