Vulnerability · Published Mar 20, 2026 · Assigned by GitHub_M

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

Medium 5.3

In plain English

A medium-severity cross-site scripting in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.3%top 82.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	craftcms/cms	5.9.11	GHSA-3x4w-mxpf-fhqq

Affected products (as reported)

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

Weakness: CWE-79 · Vector: 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

References

https://github.com/craftcms/cms/security/advisories/GHSA-3x4w-mxpf-fhqq x_refsource_CONFIRM
https://github.com/craftcms/cms/commit/f634a9d21edcafd83a6716047d275f985aba6be1 x_refsource_MISC
https://github.com/craftcms/cms/releases/tag/5.9.11 x_refsource_MISC