RCE in Craftcms Cms
CVE-2026-92593
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (46.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/craftcms/cms/security/advisories/GHSA-5jmw-g85v-7jv2 (vendor-advisory)
- www.vulncheck.com/advisories/craft-cms-5.10.0-before-5.10.13-authenticated-remo… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92593?
- CVE-2026-92593 is a high-severity vulnerability in Craftcms Cms, classified under Code Injection. CVSS score: 8.8/10. Published 2026-09-16.
- How severe is CVE-2026-92593?
- High severity. CVSS v3 base score is 8.8 out of 10.