CVE-2026-50281Network attack vector

Authenticated element overwrite via nested ID assignment

Published Jul 2, 2026 · Updated Jul 2, 2026

Mass assignment in Craft CMS 5.7.0 through 5.9.20 allows remote authenticated users to overwrite arbitrary site elements. actionBulkDuplicate() accepts an id inside newAttributes, and Elements::duplicateElement() passes it to Craft::configure(), replacing the null ID before saveElement() updates that row. Permission to duplicate one owned entry is sufficient to replace fields in another entry, category, or user element whose numeric ID is known or enumerated.

CVSS severity7.1
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Mass assignment in Craft CMS 5.7.0 through 5.9.20 allows remote authenticated users to overwrite arbitrary site elements. actionBulkDuplicate() accepts an id inside newAttributes, and Elements::duplicateElement() passes it to Craft::configure(), replacing the null ID before saveElement() updates that row. Permission to duplicate one owned entry is sufficient to replace fields in another entry, category, or user element whose numeric ID is known or enumerated.

The record

CVE
CVE-2026-50281
Published
Jul 2, 2026
Updated
Jul 2, 2026
Vendor
Pixel & Tonic
Product
Craft CMS
Classifications
CWE-915, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 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=>= 5.7.0, < 5.9.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pixel & Tonic · Craft CMSversion=>= 5.7.0, < 5.9.21

Published CVSS scores

7.1GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA: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-915Improperly Controlled Modification of Dynamically-Determined Object Attributes
T1565.001Stored Data Manipulation

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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