CVE-2026-92593

High

Description

Craft CMS versions 5.10.0 through 5.10.12 contain an incomplete fix for CVE-2026-55794: the Controller::getPostedRedirectUrl() -> View::renderObjectTemplate() sink remained unsandboxed, and the same fix commit added a self-signing oracle in Cp::elementLabelHtml(). Because Craft/Yii HMAC tokens are not bound to a parameter name, an authenticated low-privilege control panel user with edit rights on a single element type can mint a token over attacker-controlled Twig for the returnUrl parameter and replay it as the redirect POST parameter, reaching the unsandboxed sink and achieving server-side template injection that executes arbitrary PHP code (full server compromise). The issue is fixed in 5.10.13.

SeverityHigh

CVSS8.8

Exploit probability—

ProductCms

PublishedSep 16, 2026

First seenSep 16, 2026

Weakness typeCWE-94Code injection

How to fix

Update

craftcms cms5.10.13 or later

Vendor advisories

github.com/craftcms/cms/security/advisories/GHSA-5jmw-g85v-7jv2

Affected products

Product	Affected versions	Fixed in
craftcms cms	5.10.0 ≤ v < 5.10.13	5.10.13

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.