CVE-2026-25497

Undergoing Analysis Undergoing Analysis - In Progress

Privilege Escalation in Craft CMS GraphQL Allows Cross-Volume Asset Modification

Publication date: 2026-02-09

Last updated on: 2026-02-19

Assigner: GitHub, Inc.

Description

Craft is a platform for creating digital experiences. In Craft versions from 4.0.0-RC1 to before 4.17.0-beta.1 and 5.9.0-beta.1, there is a Privilege Escalation vulnerability in Craft CMS’s GraphQL API that allows an authenticated user with write access to one asset volume to escalate their privileges and modify/transfer assets belonging to any other volume, including restricted or private volumes to which they should not have access. The saveAsset GraphQL mutation validates authorization against the schema-resolved volume but fetches the target asset by ID without verifying that the asset belongs to the authorized volume. This allows unauthorized cross-volume asset modification and transfer. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-02-09

Last Modified

2026-02-19

Generated

2026-07-06

AI Q&A

2026-02-09

EPSS Evaluated

2026-07-05

NVD

CVE-2026-25497

EUVD

EUVD-2026-6846

Affected Vendors & Products

Vendor	Product	Version / Range
craftcms	craft_cms	4.0.0
craftcms	craft_cms	4.0.0
craftcms	craft_cms	4.0.0
craftcms	craft_cms	4.0.0
craftcms	craft_cms	5.0.0
craftcms	craft_cms	5.0.0
craftcms	craft_cms	From 4.0.0 (exc) to 4.17.0 (exc)
craftcms	craft_cms	From 5.0.0 (exc) to 5.9.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-639	The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

Executive Summary

This vulnerability exists in Craft CMS's GraphQL API in versions from 4.0.0-RC1 to before 4.17.0-beta.1 and 5.9.0-beta.1. It is a Privilege Escalation issue where an authenticated user with write access to one asset volume can escalate their privileges to modify or transfer assets belonging to other volumes, including restricted or private ones. The problem arises because the saveAsset GraphQL mutation checks authorization against the volume defined in the schema but then fetches the target asset by ID without verifying if the asset actually belongs to the authorized volume. This allows unauthorized cross-volume asset modification and transfer.

Impact Analysis

This vulnerability can allow an attacker who has limited write access to one asset volume to gain unauthorized access to other asset volumes, including restricted or private ones. This means they could modify or transfer assets they should not have access to, potentially leading to data tampering, unauthorized data exposure, or disruption of digital content managed by the platform.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, upgrade Craft CMS to version 4.17.0-beta.1 or later, or 5.9.0-beta.1 or later, where the issue is fixed.

Until the upgrade can be applied, restrict write access to asset volumes only to trusted users to minimize the risk of privilege escalation via the GraphQL API.

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