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CVE-2026-33051— Craft CMS Vulnerable to Stored XSS in Revision Context Menu

Quick assessment

Affected
craftcms cms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS 5.9.0-beta.1至5.9.10版本存在跨站脚本漏洞，该漏洞源于element editor中creator的fullName字段未正确处理，可能导致跨站脚本攻击和权限提升。

AI Predicted 8.6 Difficulty: Hard EPSS 0.29% · P20
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I. Basic Information for CVE-2026-33051

Vulnerability Information
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Vulnerability Title
Craft CMS Vulnerable to Stored XSS in Revision Context Menu
Source: CVE Program / CVE List V5
Vulnerability Description
Craft CMS is a content management system (CMS). In versions 5.9.0-beta.1 through 5.9.10, the revision/draft context menu in the element editor renders the creator’s fullName as raw HTML due to the use of Template::raw() combined with Craft::t() string interpolation. A low-privileged control panel user (e.g., Author) can set their fullName to an XSS payload via the profile editor, then create an entry with two saves. If an administrator is logged in and executes a specifically crafted payload while an elevated session is active, the attacker’s account can be elevated to administrator. This issue has been fixed in version 5.9.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Craft CMS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS 5.9.0-beta.1至5.9.10版本存在跨站脚本漏洞，该漏洞源于element editor中creator的fullName字段未正确处理，可能导致跨站脚本攻击和权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
craftcms cms >= 5.9.0-beta.1, < 5.9.11 -

II. Public POCs for CVE-2026-33051

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III. Intelligence Information for CVE-2026-33051

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Patches & Fixes for CVE-2026-33051 (1)

Vendor Advisories for CVE-2026-33051 (1)

Vendor Pages for CVE-2026-33051 (1)

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-79

V. Comments for CVE-2026-33051

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