What is the CVSS score of CVE-2026-25497?

CVE-2026-25497 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-25497?

Within 24 hours: Identify all Craft CMS instances in your environment and verify their version numbers against the affected range (4.0.0-RC1 to <4.17.0-beta.1 and 5.9.0-beta.1). Within 7 days: Apply available patches to upgrade affected instances to patched versions (4.17.0 or later for v4, and 5.0 or later for v5). Within 30 days: Conduct a security audit of asset access logs to identify any unauthorized asset modifications or transfers that may have occurred, and review user permissions for least-privilege access to asset volumes.

Craft Cms CVE-2026-25497

Q: Which versions of Craft Cms are affected by CVE-2026-25497?

Authenticated users with write access to any asset volume in Craft CMS can exploit a GraphQL API vulnerability to gain unauthorized access to and modify assets in restricted volumes across the entire…. A patch is available.

HIGH

Authorization Bypass Through User-Controlled Key (CWE-639)

2026-02-09 security-advisories@github.com

GHSA-fxp3-g6gw-4r4v

Privilege Escalation Craft Cms Craftcms

8.8

CVSS 3.1 · GitHub Advisory

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Authenticate as user with write access
Delivery

Query target asset ID from restricted volume
Exploit

Call saveAsset GraphQL mutation with crafted parameters
Execution

Bypass authorization check
Impact

Modify or transfer restricted asset

Vulnerability Assessment

Weakness	CWE CWE-639 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Object-level authorization, IDOR prevention
Exploitation Conditions	Authenticated user account with write access to at least one asset volume in Craft CMS 4.0.0-RC1 through 4.16.x or 5.0.0 through 5.9.0-beta.0. GraphQL API must be enabled and accessible to authenticated users.
Impact	CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation no authentication required.
Exploit ScenarioDerived	An attacker without authentication could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Craft CMS versions 4.0.0-RC1 to 4.17.0 and 5.0 to 5.9.0 contain a privilege escalation vulnerability in the GraphQL API that allows authenticated users with write access to one asset volume to modify or transfer assets across any other volume, including restricted ones they should not access. The vulnerability stems from insufficient authorization validation in the saveAsset mutation, which verifies permissions against the intended volume but fails to confirm the target asset actually belongs to that volume. An attacker with limited asset write permissions can exploit this to gain unauthorized access to and manipulate sensitive assets in protected volumes.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 8.8

Craft Cms versions up to 4.17.0 is affected by authorization bypass through user-controlled key (CVSS 8.8).

RemediationAI

A vendor patch is available — apply it immediately. Fixed in version 4.17.0. Restrict network access to the affected service where possible.

Affected Packages

composer craftcms/cms fix: 4.17.0-beta.1, 5.9.0-beta.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in composer

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affects Craft Cms. 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 agains

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Feb 19, 2026 - 19:16 nvd

Patch available

CVE Published

Feb 09, 2026 - 20:15 nvd

HIGH 8.8

DescriptionGitHub Advisory

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.

Executive ViewAI

Why It Matters

Authenticated users with write access to any asset volume in Craft CMS can exploit a GraphQL API vulnerability to gain unauthorized access to and modify assets in restricted volumes across the entire platform. This affects organizations using Craft CMS versions 4.0.0-RC1 through 4.17.0-beta.1 and 5.9.0-beta.1, potentially exposing sensitive digital content and enabling data theft or manipulation by internal or compromised accounts.

Business Impact: High

Compensating Controls

Apply vendor patch. If immediate patching is not feasible, implement network-level restrictions to GraphQL API endpoints, disable GraphQL API access for non-administrative users, and implement Web Application Firewall (WAF) rules to block saveAsset mutations from users with limited asset permissions until patches are deployed.

Threat Intelligence Overview

EPSS Score

0.0%

Top 97% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +44

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.