CVE-2026-33051

MEDIUM EPSS 15.3%
Published Mar 20, 20263mo ago · Modified Mar 20, 20263mo ago
5.3 CVSS 4.0
Medium
Find Similar
Published Mar 20, 2026 3mo ago
Last Modified Mar 20, 2026 3mo ago

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.

CVSS Details

Base Score
5.3
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
15.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
craftcmscraft_cms*≥5.9.0  –  <5.9.11

References 3

  • github.com https://github.com/craftcms/cms/commit/f634a9d21edcafd83a6716047d275f985aba6be1
    Patch
  • github.com https://github.com/craftcms/cms/releases/tag/5.9.11
    ProductRelease Notes
  • github.com https://github.com/craftcms/cms/security/advisories/GHSA-3x4w-mxpf-fhqq
    PatchVendor Advisory

Remediation

  • github.com https://github.com/craftcms/cms/commit/f634a9d21edcafd83a6716047d275f985aba6be1
    Patch
  • github.com https://github.com/craftcms/cms/security/advisories/GHSA-3x4w-mxpf-fhqq
    PatchVendor Advisory