CVE-2026-33051Network attack vector

Administrator escalation via unescaped creator name

Published Mar 20, 2026 · Updated Mar 20, 2026

Stored XSS in Craft CMS 5.9.0-beta.1 through 5.9.10 allows remote authenticated users to elevate their accounts via creator names. ElementsController::_contextMenuItems passes the creator name into Craft::t() without HTML encoding and marks the translated result as raw markup. Exploitation requires a low-privileged control panel user to save a payload as a full name and an administrator with an elevated session to open the affected revision or draft menu.

CVSS severity5.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Craft CMS 5.9.0-beta.1 through 5.9.10 allows remote authenticated users to elevate their accounts via creator names. ElementsController::_contextMenuItems passes the creator name into Craft::t() without HTML encoding and marks the translated result as raw markup. Exploitation requires a low-privileged control panel user to save a payload as a full name and an administrator with an elevated session to open the affected revision or draft menu.

The record

CVE
CVE-2026-33051
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Pixel & Tonic
Product
Craft CMS
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 5.9.0-beta.1, < 5.9.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pixel & Tonic · Craft CMSversion=>= 5.9.0-beta.1, < 5.9.11

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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