# CVE-2026-92593 — craftcms cms

> As of 2026-09-17, CVE-2026-92593 is a HIGH-severity vulnerability in craftcms cms, CVSS v3.1 8.8. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-92593 as of 2026-09-17; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-17

## What is 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.

The record classifies CVE-2026-92593 under weakness class [CWE-94](https://intel.threadlinqs.com/cwe/CWE-94). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 19 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.8 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-16, last modified 2026-09-17

## Is CVE-2026-92593 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [craftcms](https://intel.threadlinqs.com/vendors/craftcms): cms

## How to fix CVE-2026-92593

No vendor patch reference has been recorded for CVE-2026-92593 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-92593

No threat campaign in the Threadlinqs corpus currently references CVE-2026-92593, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD. Last verified by Threadlinqs on 2026-09-17. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — vendor advisory](https://github.com/craftcms/cms/security/advisories/GHSA-5jmw-g85v-7jv2)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/craft-cms-5.10.0-before-5.10.13-authenticated-remote-code-execution)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-92593
Full detection coverage and IOCs for threats exploiting CVE-2026-92593 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp